Travel south from Aachen or the Eifel, past Trier, up the Moselle or through Saarland into Lorraine, and somewhere along the way you cross a border that ran differently two thousand years ago. Where the Moselle, Saar and Meuse have their sources and upper courses lived a people whose name survives in the city name Metz: the Mediomatrici. They left no texts. We know them from three or four lines in Caesar, a description in Strabo and two dramatic scenes in Tacitus. This article sets out what those passages actually say, separates it from what scholars infer, and states openly where we could read only secondary literature.
The Romans wrote Mediomatrici, Strabo in Greek Mediomatrikoi. Behind the Latin form stands, according to the linguist Xavier Delamarre, a Gaulish Medio-māteres, literally "Middle Mothers". Two readings have been proposed: either the name means the people "between the mother rivers", with the Marne (Matrona) and a similarly named watercourse in mind; or it means "Mothers of the Middle World", the space between heaven and the underworld. Both are interpretations by linguists, not testimony from the sources. We know this only from English Wikipedia, which cites Delamarre's Dictionnaire de la langue gauloise (2003); we have not consulted the book. Anyone who takes the name as evidence for a mother-goddess cult among the Mediomatrici goes well beyond what the sources support. We treat the cult of the Matronae in the Rhineland elsewhere (Matronae) without attributing it to the Mediomatrici.
The capital was called Divodurum. The name is usually explained as "place of the gods" or "divine enclosure" (divo- "divine", -duron "gate, court, walled place"); that, too, is a linguistic reconstruction. The full Roman designation was Divodurum Mediomatricorum, "Divodurum of the Mediomatrici". Over the centuries this became Metz, by the usual explanation from the tribal name and not from the place name; we have not checked the intermediate forms ourselves. It is a pattern found elsewhere: in late antiquity cities took the name of the tribe whose chief town they had been (Paris, Reims and Amiens are well-known examples).
A few terms at the outset. A tribe here means an association of settlement communities with a common name and a manageable territory, not a state with fixed borders. The Romans called such an association a civitas; the word denotes both the citizen body and its territory with the chief town, and in the Gallic provinces it became an administrative unit. An oppidum, in Caesar, is a fortified settlement, often on a hill or in a river bend, a centre of craft, trade and refuge. A vicus is a Roman-period small town without its own town charter, usually on a road.
We fix the location from three ancient descriptions that do not agree in every detail. In book four (IV, 10) Caesar describes the rivers Meuse and Rhine. The Meuse, he writes, rises in the Vosges in the territory of the Lingones. The Rhine, by contrast, emerges among the Lepontii in the Alps and flows for a long way through the lands of the Nantuates, Helvetii, Sequani, Mediomatrici, Tribocci and Treveri before it divides into several arms near the coast. From this passage, which we read only in a summary with a short Latin excerpt, it follows that in the mid-first century BC Caesar let the territory of the Mediomatrici reach the Rhine, between the Sequani to the south and the Treveri to the north.
Strabo, writing around the turn of the era, confirms this in other words (Geographica IV, 3, 4; we read the English translation by Thayer/Loeb). After the Helvetii, along the Rhine, dwell the Sequani and the Mediomatrici, and in their territory are situated the Tribocci, a Germanic tribe that crossed the river from its homeland. Beyond the Mediomatrici live the Leuci and part of the Lingones; after the Mediomatrici and the Tribocci come the Treveri along the Rhine. The point to note is that two statements stand side by side: the Mediomatrici appear as Rhine neighbours, and at the same time Germans (the Tribocci) are settled "in their territory". Strabo does not say what this overlay looked like politically.
The geographer Ptolemy names the Mediomatrikes in the second century AD (Geographike Hyphegesis II, 9, 7) and places them south of the Treveri between the Remi and the Leuci. We know this only from secondary literature (Wikipedia, citing recent reference works). Pliny the Elder (Naturalis historia IV, 106) also lists the tribe, likewise known to us only through secondary literature.
Modern maps usually show the upper Meuse, Moselle and Saar region: today's Lorraine with Metz and, towards the east, parts of Saarland. A fixed boundary cannot be drawn from the sources, and it is not even certain that there was one. A history of Saarland therefore words it cautiously: the Saar region belonged partly to the tribal territory of the Treveri with Trier as chief town and partly to that of the Mediomatrici with Metz. Where exactly the change lay, we do not know.
About the Mediomatrici before their first appearance in written sources the texts say nothing; what we know comes from archaeology, and there the tribal name is a later addition. The secondary literature names as a core of the tribal area the hill at the confluence of the Moselle and the Seille on which the later city of Metz arose. A history of Metz (English Wikipedia, citing Bour 2007) lets Celtic settlement there begin as early as 450 BC and calls the site their chief oppidum. We know that date only from this summary and have not checked it against an excavation report; a recent French study of the origins of Divodurum (excavations at Place de la République and Rue Paille-Maille) was not accessible to us. That Divodurum was a settlement centre in the Iron Age is plausible; how exactly it looked and from when it was an oppidum in Caesar's sense cannot be said on the basis of our sources.
For Saarland, Sander's overview mentions hill-top fortifications "mostly from Celtic times", with the Hunnenring near Otzenhausen as the most significant, and also rich graves at Schwarzenbach (Nonnweiler) and Reinheim. To which tribe the Hunnenring belongs depends on where one draws the tribal boundary; it lies in the north of Saarland, by common opinion rather in Treveran territory. We take that as an assumption, not as a secure attribution. For the princely graves of the region see our articles on Celtic princely graves and the Celtic prince.
The most famous grave of the area lies in the Blies valley, directly on today's Franco-German border. In 1954 the handle of a bronze mirror turned up during gravel extraction at Reinheim; the subsequent excavation uncovered a richly furnished woman's grave now known as the "Princess of Reinheim". According to the European Culture Park Bliesbruck-Reinheim it dates to around 370 BC, the Early La Tène period. The La Tène period (named after the site of La Tène on Lake Neuchâtel) is the later Iron Age of the Celts; the Early La Tène covers roughly the fifth and fourth centuries BC. The dead woman lay in an oak chamber; the bones have vanished, so neither age nor cause of death is known. The grave goods include a gold torc of 187 grams, two bracelets and two rings, beads of amber and Carthaginian glass, a bronze beaked flagon of Etruscan inspiration said to have held wine, as well as brooches, a belt chain, drinking vessels and the mirror mentioned. The park's press kit (2022) says that on the basis of these goods researchers suspect a priestess; that is a hypothesis, not evidence. The grave lies in a cemetery of three burial mounds.
And now the question this article does not want to dodge: did the Princess belong to the Mediomatrici? The answer is that this cannot be clearly demonstrated. Between the grave (around 370 BC) and Caesar's text (around 50 BC) lie more than three centuries. No tribal name is recorded in writing for this region in the fourth century BC, and whether there was a political unit standing in continuity with the later named tribe, we do not know. That the Blies and Saar region can be counted in later times as Mediomatrican territory makes a link plausible, but it remains an interpretation. An attribution to Treveran territory cannot be excluded either, since the boundary is blurred. Whoever calls the woman "the Mediomatrican" puts a name on a grave that does not bear it. On this site she is therefore called, as in the scholarly literature, the "Princess of Reinheim".
Their first appearance in an action stands in the seventh book of Caesar's Bellum Gallicum, and it is sober. Around 52 BC Caesar is besieging Vercingetorix in Alesia, an oppidum of the Mandubii (see Mandubii). At an assembly the Gallic leaders decide to raise a relief army, and not, as Vercingetorix wished, by calling up all men able to bear arms, but by imposing a fixed contingent on each tribe, so that the army would suffer neither crowding nor shortage of supplies. In the list (VII, 75) the Aedui and the Arverni head the field with 35,000 men each, followed by tribes with 12,000, 10,000, 8,000 and fewer. Five thousand men are to be supplied, according to the text, by among others the Ambiani, the Petrocorii, the Nervii, the Morini, the Nitiobriges and, in the same series, the Mediomatrici ("Suessionibus, Ambianis, Mediomatricis, Petrocoriis, Nerviis, Morinis, Nitiobrigibus quina milia"). The first member, the Suessiones, stands in square brackets in the edition we saw; the transmission is evidently not quite secure there.
What can be made of the sentence? Established: in 52 BC the Mediomatrici were on the list of tribes to contribute to the relief army, and their quota of 5,000 lay in the middle of the scale. Not established: whether they actually supplied that number. In the same chapter Caesar expressly notes that the Bellovaci sent only 2,000 of the 10,000 demanded (see Bellovaci), and he says nothing comparable about the Mediomatrici. The word Mediomatricis also stands only in this chapter; in book VII the tribe does not appear again according to our search. In the first book (the march of the Helvetii) we did not find it. That agrees with the secondary literature: Caesar names the tribe in only two places, IV, 10 and VII, 75.
One interpretation one reads is that the Mediomatrici were thereby involved in the pan-Gallic revolt. As a statement about their attitude that is too thin: a contingent on a list is an obligation set by the council of the Gauls, not proof of a voluntary decision by the tribe. How the Mediomatrici came under Roman rule, when they submitted or whether a campaign was needed, is not stated in the passages we read. We have no source reference on this that we could cite with confidence.
Under Roman administration the tribal association became a civitas Mediomatricorum in the province of Gallia Belgica, with Divodurum as chief town. From Strabo (early first century AD), Pliny, Tacitus and Ptolemy it follows that the name was widely known in the Imperial period. About the city itself the English-language overview literature says the following, which we flag as secondary: Divodurum lay at a junction of several roads and is said to have been larger and wealthier than Lutetia, the later Paris, not least through the wine trade; it had one of the largest amphitheatres in Gaul, and an aqueduct about 23 kilometres long with 118 arches carried water from Gorze to the baths in the second century AD. Remains of this conduit stand at Jouy-aux-Arches and Ars-sur-Moselle; they are among the most visible traces of the city today. The details come from English Wikipedia (citing Vigneron 1986 and a 2006 collective publication), not from our own checking.
On the Romanisation of the tribe the secondary literature says it apparently proceeded more slowly among the Mediomatrici than among the neighbouring Treveri (Wightman 1985 and Demougin 1995, after Wikipedia). What "more slowly" means, on which finds it rests and whether it holds for the whole tribe or only for individual regions, we could not clarify; we therefore pass the statement on only as a pointer, not as a result.
The most dramatic passage about the Mediomatrici is in Tacitus. In the Year of the Four Emperors, AD 69, the troops of Vitellius march from the Rhine towards Italy to assert his claim to the throne against Otho. The route leads through Gaul. Tacitus tells (Historiae I, 63) how the soldiers visit the Treveri as allies and are received with great friendliness in Divodurum, "the town of the Mediomatrici". Then the scene turns. For no clear reason the troops seize their weapons and fall upon the inhabitants. The context points to the army of Fabius Valens, whom Tacitus sends to Gaul in the preceding chapter, but the verb stands without a name in the sentence. We give the passage in our own abridged translation.
… in Divodurum – that is the town of the Mediomatrici –, although they had been received with every courtesy, a sudden panic seized them; they snatched up their weapons to cut down a guiltless citizenry, not from greed for loot or plunder but from fury and frenzy, for unclear reasons and therefore hard to remedy, until, soothed by the entreaties of their commander, they desisted from destroying the community; yet some four thousand people were killed.Tacitus, Historiae I, 63; our own abridged translation from the Latin text (thelatinlibrary.com, read in excerpts); omissions are cuts
One should not make the scene larger than it is in Tacitus. He gives no reason and describes neither a revolt of the Mediomatrici nor a punitive action; the word for the citizenry is "guiltless" (innoxia civitas). The figure of about four thousand dead is his statement; we know of no second source against which to check it, and ancient numbers of this kind are in any case to be read with caution. That the town was "wiped out" does not stand there; on the contrary, the soldiers let themselves be restrained. And what followed Tacitus also lets us see: the incident spread terror in Gaul, so that the next towns met the army with magistrates and petitions. That is a statement about the effect of the deed, not about what Divodurum was afterwards.
A year later the name appears again, this time in the narrative of the revolt of Civilis and the Treveri. When Valentinus and Tutor call the Treveri to arms once more, the Roman legions that had earlier been in Treveran territory withdraw, and they do so "to the Mediomatrici, an allied citizenry" (in Mediomatricos, sociam civitatem, Historiae IV, 70). The commanders Herennius and Numisius are killed by the rebels. Shortly afterwards the Roman commander Cerialis has the troops from Mediomatrican country led by a shorter route against the enemy (IV, 71), and Tacitus describes the sorry sight of the legions that had been "summoned" from there (IV, 72) and returned silent, eyes cast down.
A cautious picture emerges for the Mediomatrici. First: Tacitus calls them a socia civitas, an expression that by the usual reading points to an alliance or friendship with Rome. Second: in AD 70 they were not on the side of the Treveri; even without Tacitus commenting, that can be read from the passage. Third: why, he does not answer. Whether the massacre of 69 had after-effects, whether the old rivalry with the Treveri played a role or whether the position of their land simply decided it are questions we can only ask, not prove. Tacitus himself gives no year at this point; the dating to 70 results from the context of the consular dates in the text.
Anyone who wants to see what Roman life looked like in Mediomatrican country can do so on the Blies, in the European Culture Park Bliesbruck-Reinheim. The settlement of Bliesbruck was a Gallo-Roman small town, a vicus in the sense explained above. Gallo-Roman finds turned up in 1971 during gravel extraction; excavations began the following year because the ruins, extending over more than 30 hectares, were threatened by quarrying. According to the Bliesbruck press kit (2022) the small craft and trading town appears in the years around AD 40 to 50. The baths arose around the turn from the first to the second century and reached their greatest extent around the middle of the third century. Excavations of 1988 to 1992 yielded the cold, tepid and hot rooms (frigidarium, tepidarium, caldarium) and a swimming pool in the courtyard. In the west quarter stood 14 houses with porticoes in which, among other things, bronze was worked, iron forged and bread baked; in the east quarter eight long plots, the longest house measuring 80 metres and perhaps a meeting place of a trade or cult association. A monumental fountain, rare in Gaul, and a basilica as market hall belonged to the public centre.
The unrest between 250 and 276, which the press kit connects with Germanic incursions, ended the bathing operation. After that the settlement declined slowly until the middle of the fifth century. That Bliesbruck belonged to the civitas of the Mediomatrici and lay in its eastern part is stated in the scholarly literature (Petit/Santoro 2016, Antonelli/Petit 2017, after Wikipedia); the ancient name of the place is unknown. The press kit itself does not name the Mediomatrici, so we give this attribution as a scholarly opinion we have not checked against the original papers. Since 1999 the park has also shown a walk-in reconstruction of the princess's grave, and the Roman trunk road that passed the two quarters runs beneath the old country road.
From the sources a web of neighbours results, which can be ordered like this. To the north sat the Treveri, with Trier as chief town; Strabo has them "after the Mediomatrici and the Tribocci" on the Rhine. To the south lay the Sequani and further south the Helvetii. To the west and south-west Strabo names the Leuci (for whom we have no article of our own yet) and part of the Lingones; among the Remi and the Leuci, finally, Ptolemy locates the Mediomatrici "in between", according to secondary literature. Beyond these neighbourly statements the sources offer no more: no boundary treaties, no feuds, no marriage alliances that we could document with a passage. That there was rivalry with the Treveri is plausible but not attested, and the claim that the Mediomatrici were "favoured" by Rome can be inferred only from the socia civitas of AD 70, that is, from a single word.
The relation to the Rhine Germans is the interesting part. Strabo calls the Tribocci a Germanic tribe seated in Mediomatrican territory, and Caesar counts them in the first book (I, 51), beside Harudes, Marcomanni, Vangiones, Nemetes, Sedusii and Suebi, among Ariovistus's forces. In the Germania (ch. 28) Tacitus describes the bank of the Rhine as undoubtedly inhabited by Germans, namely Vangiones, Tribocci and Nemetes (see Vangiones, Tribocci, Nemetes), and adds that the Treveri and Nervii are eager to claim Germanic descent in order to set themselves apart from the Gauls' resemblance and sloth, and that not even the Ubii like being reminded of their origin. He does not name the Mediomatrici at this point, and in the passages we read no author calls them Germans. They appear as a Gallic people between Gaul and the Rhine, in whose neighbourhood Germanic groups settled or immigrated. Whoever calls them "half Germans" claims more than the texts yield. For more on the relation of Celts and Germans in the Rhineland see our article on the Germans in the Rhineland.
Around AD 400 Metz appears as civitas Mediomatricorum, so the secondary literature (Nègre 1990, after Wikipedia). That is a striking continuity: the tribal name remained in the administrative language of late antiquity when the tribe itself had long since merged into the empire, and it survived in the city name. In 451 Attila is said to have plundered the city with his Huns, so the English history of Metz (Di Rocco 2009); we have not checked the statement against a primary source, and the Hun narratives of the region are partly later tradition. An older legend says that Saint Clement, the first bishop of Metz, defeated a dragon, the Graoully, in the amphitheatre. That is a founding myth of Christianity, not history; what might be historical in it is uncertain, and the first securely attested bishop is named in the English history of the city only for the year 535, without a reference there.
From then on the tribe can no longer be followed as a group. Whether and how the Mediomatrici became part of the Gallo-Roman population later overlaid by Franks is a process we cannot document with sources. For the early medieval period of Metz we consulted no sources and therefore make no statement about it.
Why should the Rhineland or the Eifel care about Lorraine Celts? Because the map of the Iron Age and the Roman period does not stop at today's borders. North of the Mediomatrici lay the Treveri, whose territory reached to the Moselle and the Eifel; around Aachen Caesar names the Eburones, to whom we have devoted an article of their own (Eburones), and further north-east the Ubii. The Mediomatrici lay a good stretch south of these groups, but they belonged to the same dense network of tribes, roads and river valleys. The routes that linked Metz with Trier and the Rhine crossed Saarland, and Roman villas such as those at Borg and Nennig (Perl) or the Roman mining at Wallerfangen show how densely this landscape was later settled (Sander, overview of Saarland history). That Reinheim and Bliesbruck lie today on the Franco-German border is an accident of history, but a pleasing one: today's border cuts through a landscape that may have been a unity in the Iron Age.
A short ordering of the statements to close. Established is what a source with clear wording supports: the position on the upper course of the Meuse, Moselle and Saar as far as the Rhine, the capital Divodurum, the contingent of 5,000 in Caesar's list, the death of about 4,000 people in AD 69 and the description as an allied citizenry in AD 70. Plausible, but not proven, are a continuity between the Iron Age centres on the Moselle and the Blies and the tribe named later, and the rivalry with the Treveri. Interpretation remains the derivation of the name from "Middle Mothers", the attribution of the Princess of Reinheim and the talk of a "slower" process of Romanisation. And legend is everything one might tell about gods, sacrificial customs and princes of the Mediomatrici. The sources are silent on these, and no assertion belongs in that gap.
One thought for the road: whoever travels from Aachen to the south, via Trier, along the Saar and on to Metz, follows a line that was already travelled in antiquity. In the surroundings of Metz the remains of the aqueduct at Jouy-aux-Arches still stand, and in the Blies valley the princess's grave can be entered in reconstruction. The tribes that once settled this area vanished from the texts, but their names live on in the cities through which we drive.
In our family workshop in Alsdorf we make laser-engraved slate plaques with Nordic-Germanic and Celtic motifs. For the Mediomatrici there are no pictorial signs of their own that we could document, and so we invent none. Their story lives in names, places and a few lines of ancient authors, which is one more reason to tell it carefully. Anyone interested in Celtic motifs will find more under Celts.
The Treveri · The Lingones · The Sequani · The Helvetii · The Remi.
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