Sinmara

In Norse mythology, Sinmara is a gýgr (giantess), usually considered a consort to the fiery jötunn Surtr, the lord of Muspelheim, but wife of Mimir.

Sinmara is attested solely in the poem Fjölsvinnsmál, where she is mentioned alongside Surtr in one (emended) stanza, and described as keeper of the legendary weapon Lævateinn in a later passage.

This is where Sinmara figures, as the keeper of Lævateinn, the only weapon capable of slaying the rooster: Fjǫsviþr kvaþ: 'Lǽvateinn heitir,   es gørþi Loptr rúnum fyr nágrindr neþan; Í Lǽgjarns keri   liggr hjá Sinmǫru, ok halda njarþlásar niu.

'[14] Fjolsvith spake: "Lævatein[c] is there, that Lopt with runes Once made by the doors of death; In Lægjarn's chest[d] by Sinmora lies it, And nine locks fasten it firm.

'[20] Fjolsvith spake: "The sickle bright in thy wallet bear, Mid Vithofnir's feathers found; To Sinmora give it, and then shall she grant That the weapon by thee be won.

Thus in the modified readings of certain editions and in Bellows' translation, Fjölsviðr names Sinmara and Surtr together, and says that the two are endangered by the rooster Víðópnir that sits atop the tree Mímameiðr: Fjǫsviþr kvaþ: 'Viþofnir heitir,   en hann stendr veþrglasi á meiþs kvistum Mima: einum ekka   þryngr hann ørófsaman Surt ok Sinmǫru.

Vidofnir he is called; in the clear air he stands, in the boughs of Mima's tree: afflictions only bring together indissoluble, the swart bird at his lonely meal.

Falk further notes that Sinmara is referred to as aurglasis Eirr, which he translates as "the goddess of the gold ring", and compares Hel's being called Gjallar sunnu gátt "wearer of the necklace" in stanza 9 of the poem Forspjallsljóð.