Fárbauti and Laufey

Loki's father is the jötunn Fárbauti, "the dangerous striker"; his mother is Laufey, "leafy island," also called Nál, "needle," for her slimness. The old reading of this marriage is elemental and irresistible: lightning strikes leaf-litter, and what is born is wildfire — Loki, bright, quick, warming, and catastrophic when unwatched.

The telling detail is the surname: Loki is always "Loki Laufeyjarson" — his mother's son, in a culture that named by fathers. Whether that dodges the giant father, honours a goddess mother, or just alliterates with Loki, the trickster carries the one matronymic in Asgard: even his name refuses the usual rules.

What the sources actually say

The information is thin even by the standards of jötunn genealogy. Snorri's Gylfaginning names Fárbauti as Loki's father in a single sentence, and elsewhere in the Prose Edda, in Skáldskaparmál's lists of kennings, Loki is called "son of Fárbauti" alongside "son of Laufey" — the two parents cited almost interchangeably as if either alone identified him. Neither giant does or says anything in any surviving myth; they exist purely as an entry in Loki's pedigree, the way Bölþorn exists only to have fathered Bestla. Snorri also gives Loki two brothers, Býleistr and Helblindi, sons of the same parents, who are themselves never more than names in a list — siblings invented, it seems, only so Loki could have some.

The Icelandic saga-romance Sörla þáttr, a much later and more folkloric text, calls Loki "Loptr, son of Fárbauti" in passing, confirming the father's name persisted in tradition outside Snorri's Edda, though it adds no new detail about him. That is the entire dossier: two names, a scatter of kennings, and a genealogical footnote in a saga written centuries after the myths took shape.

The lightning-and-leaves reading

Fárbauti's name is built from fár ("danger, harm, calamity") and a form related to bauta ("to strike"), giving something like "he who strikes dangerously" or "the dangerous smiter" — read by most scholars as a description of lightning, sudden and destructive from a clear sky. Laufey's name is more straightforwardly "leaf island" or "leafy isle," and her byname Nál means "needle," commonly explained as a reference to a slender or pointed physique, though it may also gesture at pine needles — the kindling a lightning strike would find waiting.

Put the names together and the marriage reads like a nature-riddle: a bolt from the sky meets dry leaf-litter on the ground, and what results is fire — sudden, hungry, impossible to fully control once loose. It is an appealing shorthand for Loki himself: brilliant, quick to ignite, capable of warming a hall or burning it down depending on the wind. No source states this reading outright; it is an inference built from etymology, the same interpretive move scholars make with Bestla's name or Hræsvelgr's. It has become the standard explanation precisely because it fits Loki's character so well — a trickster born, in effect, from an act of weather.

Why does Loki carry his mother's name?

This is the genuinely strange fact in the record, and no source explains it. Norse naming convention ran overwhelmingly through the father — every other major figure in the mythology, giant or god, is a "-son" or "-dóttir" of a male parent. Loki alone is consistently "Laufeyjarson," never "Fárbautason," across both Eddas and the skaldic corpus. A few explanations circulate among scholars, none provable: that Fárbauti was somehow unavailable or unacknowledged as a father in the way the tales were told; that Laufey held higher standing or was more prominent in a now-lost strand of tradition, making her name the more useful identifier; or simply that the medieval poets liked the sound and alliteration of "Loki Laufeyjarson" and kept it for that reason alone. Whatever the cause, the pattern is consistent enough across independent sources that it cannot be an accident of transmission — someone, early on, decided Loki belonged to his mother's line.

Loki's family, before and after

Fárbauti and Laufey stand at the start of a lineage the mythology returns to obsessively. Their son grows up to marry Sigyn and father Narfi and Váli, and separately to father, by the giantess Angrboða, three of the mythology's most dangerous beings: the wolf Fenrir, the World Serpent Jörmungandr, and Hel, ruler of the dead. Loki even bears a child himself, in mare-shape, siring Sleipnir on the stallion Svaðilfari. A single obscure jötunn marriage, recorded in barely two sentences, sits at the root of nearly every monster and catastrophe in the run-up to Ragnarök — proof that in this mythology, the least-told stories are often bearing the most weight.

In the primary sources

Gylfaginning and Skáldskaparmál, both in the Prose Edda, supply everything known: Fárbauti as father, Laufey (or Nál) as mother, and Býleistr and Helblindi as brothers. Sörla þáttr, a legendary saga preserved in later manuscript compilations, independently confirms Fárbauti's name as Loki's father, suggesting the genealogy circulated in tradition beyond Snorri's own writing. No Eddic poem gives either parent a speaking role or narrative moment; they are, in the strictest sense, names attached to a more famous son.