They appear almost in passing in the old texts, yet they are everywhere: the disir, female spirits who watch over a family. Sometimes protecting, sometimes warning, sometimes a dark omen. Who they were cannot be pressed into a single sentence - and that is exactly what makes them so fascinating.
The Old Norse word dis (plural disir) denotes female superhuman beings closely bound to a family, a farm or a single person. They are not great goddesses with a cult across all of Scandinavia, but something nearer and more domestic: spirits belonging to one's own bloodline. One might call them the female ancestral and protective power of the kin - although even that phrase tidies things up more than the sources do.
The disir rarely act with grand gestures. They stand in the background, they accompany, they turn aside misfortune or announce it. Whoever has their favour prospers. Whoever angers them, or whose time has come, sees them in a dark hour. This double nature - protection and threat at once - runs through nearly every attestation.
In the Sigrdrifumal, where the awakened valkyrie gives young Sigurd runic and worldly wisdom, the disir are named among the mighty beings one may call upon for aid. In the Grimnismal they appear in the company of fate-working female figures. And in the Atlamal, one of the heroic lays, a woman dreams of the spadisir, the "prophesying disir", who announce approaching death. Here their second face shows especially clearly: they are messengers of fate, not merely gentle protectors.
These few passages carry weight. They link the disir to the great theme of Norse poetry - the fate that comes whether one wills it or not. Anyone interested in the female powers of destiny will find in the Norns the great sisters of this idea.
Unlike many Germanic beings, the disir have an attested cult: the disablot. The Ynglinga saga and other sources report a sacrificial feast in their honour, held in autumn or early winter as the dark season began. In Sweden it was tied to the great market and assembly of Uppsala, the disting, whose name still carries the disir.
The disablot was a feast in the small circle and the large. On the farm one honoured the female guardian spirits of one's own kin; in the realm it was bound up with kingship and the common good. That such a feast stood precisely at the threshold of the harsh season fits the role of the disir: people sought the aid of their own dead and protective powers before winter came. Similar thoughts appear in the ancestor veneration at Yule, when the family remembers its forebears.
Winning-runes learn, if thou longest to win, / and the runes on thy sword-hilt write; / some on the furrow, and some on the flat, / and twice shalt thou call on Tyr.
after Sigrdrifumal, Bellows 1923
One of the most striking scenes stands in the Thidranda thattr, a short tale from the world of the Icelandic sagas. Young Thidrandi steps out at night, though he has been warned. Then nine women in black clothing ride up with drawn swords, and nine more in white clothing. The black ones take him; he is wounded and dies. A wise man later interprets it: the disir of the family, who are bound to the old gods, take a last offering because the land will soon turn to the new faith.
The scene is literature, not a ritual report, and it is coloured by Christianity. Yet it preserves a very old idea: that the guardian spirits of a kin are at the same time its messengers of fate, in black and in white, in blessing and in ruin. The disir are never merely kind. They belong to the family - with all that this means.
Anyone who digs into the sources soon notices that the disir hardly separate cleanly from other female spirits. The fylgja, the personal following-spirit, often appears as a female figure and is occasionally itself called dis. The Norns weave fate and stand close to the spadisir. And the valkyries, Odin's battle-maidens, share with the disir the motif of the armed woman who decides over life and death - in poetry the terms are sometimes used almost synonymously.
This vagueness is not a flaw of the tradition, it is its nature. The old people did not think in tidy categories with sharp edges. They knew a field of female protective and fate powers, from which - depending on the tale - now one figure, now another emerged. Only modern scholarship has tried to impose order, and in doing so has separated much that was originally fluid.
The disir are attested in Edda poems (Sigrdrifumal, Grimnismal, Atlamal with the spadisir) and in sagas. The disablot as a sacrificial feast in their honour in autumn or early winter is attested several times, in Sweden linked to the disting of Uppsala. The Thidranda thattr preserves the scene of the nine black and nine white women. Throughout, the disir count as female protective and fate spirits bound to family and farm, with a double face.
"Disir" is a blurred umbrella category, not a clearly defined type of spirit. The boundaries with fylgja, Norn and valkyrie are fluid in the sources; the terms overlap and are partly used synonymously. The neat separation into four distinct beings is largely modern systematisation. The Thidranda thattr, too, is narrative literature coloured by Christianity, not a record of a heathen ritual.

The Norns · Draumar – dreams as omens · Fylgja & Hamingja · Seiðr – the magic · Ancestor veneration at Yule.