Týr is the god of the sworn oath and of war as an ordeal of law. Linguistically he is among the oldest of the gods — his name descends from the same root as Zeus and Jupiter, and Tuesday ("Tiw's day") carries his name. In the surviving myths, however, one act defines him.
When the gods resolved to bind the growing wolf Fenrir with the dwarven ribbon Gleipnir, the suspicious wolf demanded a pledge: a god's hand in his mouth. Only Týr stepped forward. The ribbon held, the wolf bit, and Týr — the god of oaths — paid the price of a pledge the gods never meant to honour. He is "the one-handed god" ever after. At Ragnarök he and the hound Garmr slay each other.
The oldest god with the shortest file
Týr presents the sharpest paradox in the study of Norse religion: by his name, he should be the chief god. Old Norse Týr descends from Proto-Germanic Tīwaz, from the same Indo-European root dyeus — "the bright sky, the daylight god" — that produced Zeus and Jupiter and the Sanskrit Dyaus. Roman writers equated the Germanic god with Mars, which is why dies Martis became Tiw's day, Tuesday; a votive altar from Roman Britain even names "Mars Thincsus," Mars of the thing, the legal assembly — war-god and law-god fused, exactly as the Norse sources still faintly show him. In Old Norse the common noun týr simply means "god," and Odin collects plural bynames built on it — Hangatýr, "god of the hanged"; Sigtýr, "victory-god" — as if Odin had absorbed titles that once belonged to a greater Týr.
Yet by the time the Eddas were written, Týr's portfolio had shrunk to a handful of scenes. Snorri, in Gylfaginning, describes him as the boldest and most courageous of the gods, with great power over victory in battle, good for brave men to invoke — and adds the proverbs: a man is "týr-bold" who surpasses others and does not hesitate, and "týr-wise" who is exceedingly clever. But he is, Snorri notes, not called a reconciler of men. The god of law is not gentle; his justice is the justice of the ordeal.
Why did Týr put his hand in Fenrir's mouth?
The binding of Fenrir, told in Gylfaginning, is Týr's myth, and one of the profoundest things the North ever thought about law. The gods raised Loki's wolf-son among them at Asgard, knowing the prophecies of the harm he would do — and only Týr had the courage to feed him. The wolf grew at terrifying speed. Twice the gods bound him with great chains, pretending it was a game of strength, and twice Fenrir shattered them. So they sent to the dwarves for Gleipnir: a ribbon smooth and soft as silk, woven from impossible things — the sound of a cat's footfall, a woman's beard, a mountain's roots, a bear's sinews, a fish's breath, a bird's spittle.
Fenrir looked at the silky band and smelled the trick. There was no fame in snapping a ribbon, he said; but if it was made with cunning, he would never get free, and the gods would never free him. He would submit to it on one condition: that a god lay a hand in his mouth as a pledge of good faith — at veði, in the precise legal vocabulary of a pawn given against a contract. The gods looked at one another. Every one of them understood the terms: if the binding was honest, the hand comes back; if it was treachery, the hand is forfeit. And every one of them knew it was treachery.
Only Týr stretched out his right hand. The wolf strained, the ribbon tightened, and the harder he fought the harder it bit; the gods all laughed — except Týr, says Snorri, with the driest line in the Edda: he lost his hand. The wolf lies bound until Ragnarök on that broken pledge, a sword propping his jaws, and the joint where the hand was is still called the "wolf-joint" (úlfliðr), the wrist. The myth refuses to simplify. The gods' deception was necessary — the alternative was the wolf unbound — but a false oath still costs what oaths cost, and the god of oaths pays it in person so that the pledge, at least, is real. Cosmic order, Týr's story says, rests on somebody's willingness to make good the lies that hold it together. His kennings remember it forever: "the one-handed god," "feeder of the wolf," "leavings of the wolf."
The cauldron-quest and the awkward family
Týr's one other narrative appearance is a surprise. In Hymiskviða, when the gods need a cauldron vast enough to brew ale for the sea-giant Ægir's feast, it is Týr who knows where one is: his father Hymir, a savage giant living east of the rivers at heaven's end, owns a kettle a league deep. Týr and Thor travel there together — the poem's comedy of hiding under cauldrons from the giant's ice-bearded homecoming, the fishing for Jörmungandr, the cup that only shatters against the giant's own skull — and Týr's grandmother appears with nine hundred heads, while his mother, all gold and shining brows, brings the travellers ale.
This flatly contradicts Snorri, who calls Týr a son of Odin. Either two traditions disagreed about his parentage, or "Týr" in the poem carries its generic sense of "god." Scholars note the conflict and leave it standing — a reminder of how fragmentary his surviving myth is. In Lokasenna, Loki adds injury to injury: he taunts Týr that he cannot be the right hand of justice between men anymore, and boasts that he fathered a son with Týr's wife and paid no compensation. Of this wife nothing else is known; even Týr's family exists mostly as the debris of other people's insults.
The rune and the invocation
Týr is the only god with a rune named after him that carries an attested battle-magic. The t-rune ᛏ, Tiwaz — shaped like an arrow or a spear pointing skyward — bears his name in the old rune-poems: "Týr is a one-handed god, and leavings of the wolf," says the Icelandic verse. In Sigrdrífumál, the valkyrie teaching Sigurd the victory-runes instructs: carve them on the sword's hilt and name Týr twice. Weapons from the migration age onward bear the stacked t-rune, apparently doing exactly that. Whatever the Eddas forgot about Týr, the warriors who scratched his sign onto their blades had not.
At Ragnarök
Týr does not get Fenrir — that debt is assigned to Odin, whom the wolf swallows, and to Víðarr, who avenges him. Instead, Snorri pairs Týr with Garmr, the monstrous hound bound before the cave Gnipahellir, whose howling in Völuspá marks each movement of the end. Hound and one-handed god kill each other on the plain of Vígríðr. Many readers have noticed that Garmr and Fenrir are hard to tell apart — a chained, ravening canine loosed at the world's end — and some scholars suspect they were once the same beast, which would give Týr his rematch after all. The sources as they stand keep them separate, and Týr dies as he lived: against the wolf's kind, at close quarters, unflinching.
In the primary sources
Gylfaginning in the Prose Edda carries his character sketch, the binding of Fenrir, and his death against Garmr; Skáldskaparmál lists his kennings. In the Poetic Edda he guides Thor to Hymir's cauldron in Hymiskviða, trades wounds-for-words with Loki in Lokasenna, and stands behind the victory-rune teaching of Sigrdrífumál. Beyond the manuscripts, Roman-era inscriptions to Mars Thincsus, the Tiwaz rune, and place-names like Tislund in Denmark and Tysnes in Norway attest the older, larger god the texts only half remember.
Legacy
Tuesday carries him through every week — Old English Tiwesdæg, Old Norse týsdagr, rendering the Roman day of Mars with the Germanic god of war and law. Place-names in Denmark and Norway preserve pockets of his cult, and the ᛏ rune keeps his name in every runic alphabet. Modern culture reaches for Týr whenever it needs the emblem of costly integrity: the hand given knowingly, the oath kept by the only god willing to pay for everyone else's lie.
Frequently asked questions
Why did Týr lose his hand?
The wolf Fenrir would only let the gods bind him with the ribbon Gleipnir if a god placed a hand in his mouth as a pledge that the binding was honest. It was not — and when Fenrir found himself trapped, he bit off Týr's right hand. Týr alone was willing to give the pledge, knowing the price.
Is Týr the god of war, or is Odin?
Both, differently. Odin governs victory, strategy, and the fate of armies; Týr embodies war as ordeal and law — courage, the duel, the sworn oath. Snorri says Týr has great power over victory and is the one brave men invoke; the rune-magic of Sigrdrífumál carves his name on sword-hilts.
Is Tuesday named after Týr?
Yes. Old English Tiwesdæg, "Tiw's day," translates Latin dies Martis (day of Mars) using the Germanic god equated with Mars — Tiw, the English form of Týr. Norwegian tirsdag and Danish tirsdag preserve the same god.
Who is Týr's father?
The sources disagree. Snorri's Gylfaginning makes him a son of Odin, but the Eddic poem Hymiskviða calls the giant Hymir his father. Scholars have not resolved the contradiction; it may preserve two genuinely different traditions about a very old god.
How does Týr die at Ragnarök?
He and Garmr, the monstrous hound chained at Gnipahellir, kill each other in the last battle, according to Snorri. Some scholars suspect Garmr was originally identical with Fenrir, which would make Týr's last fight a rematch with the wolf that took his hand.