In Norse mythology

Norse mythology

Norse mythology, a subset of Germanic mythology, is the overall term for the myths, legends and beliefs about supernatural beings of Norse pagans. It flourished prior to the Christianization of Scandinavia, during the Early Middle Ages, and passed into Nordic folklore, with some aspects surviving...

, Herfjötur (Old Norse

Old Norse

Old Norse is a North Germanic language that was spoken by inhabitants of Scandinavia and inhabitants of their overseas settlements during the Viking Age, until about 1300....

 "host-fetter" or "fetter of the army") is a valkyrie

Valkyrie

In Norse mythology, a valkyrie is one of a host of female figures who decides who dies in battle. Selecting among half of those who die in battle , the valkyries bring their chosen to the afterlife hall of the slain, Valhalla, ruled over by the god Odin...

. Herfjötur is attested as among the 13 valkyries listed in the Poetic Edda

Poetic Edda

The Poetic Edda is a collection of Old Norse poems primarily preserved in the Icelandic mediaeval manuscript Codex Regius. Along with Snorri Sturluson's Prose Edda, the Poetic Edda is the most important extant source on Norse mythology and Germanic heroic legends, and from the early 19th century...

poem Grímnismál

Grímnismál

Grímnismál is one of the mythological poems of the Poetic Edda. It is preserved in the Codex Regius manuscript and the AM 748 I 4to fragment. It is spoken through the voice of Grímnir, one of the many guises of the god Odin, who is tortured by King Geirröth...

, and in the longer of the two Nafnaþulur

Nafnaþulur

Nafnaþulur is a subsection of Snorri Sturluson's Prose Edda, the last part of the Skáldskaparmál. It is a listing in verse of names that may be used in poetry for various items, such as gods, giants, people, animals, and weapons...

lists found in the Prose Edda

Prose Edda

The Prose Edda, also known as the Younger Edda, Snorri's Edda or simply Edda, is an Icelandic collection of four sections interspersed with excerpts from earlier skaldic and Eddic poetry containing tales from Nordic mythology...

.

Rudolf Simek

Rudolf Simek

Rudolf Simek is an Austrian Germanist and Philologian.Simek studied German literature, philosophy and Catholic theology in the University of Vienna, before becoming a librarian and a docent at the institution. He taught among others in the universities of Edinburgh, Tromsø and Sydney...

 says the name is kenning

Kenning

A kenning is a type of literary trope, specifically circumlocution, in the form of a compound that employs figurative language in place of a more concrete single-word noun. Kennings are strongly associated with Old Norse and later Icelandic and Anglo-Saxon poetry...

-like and that the name likely refers to the "fortune determining function of the valkyries especially in battle." Simek points to a connection between the name and the idisi

Idis (Germanic)

In Germanic mythology, an idis is a divine female being. Idis is cognate to Old High German itis and Old English ides, meaning 'well-respected and dignified woman.' Connections have been assumed or theorized between the idisi and the North Germanic dísir; female beings associated with fate, as...

 mentioned in one of the two Merseburg Incantations

Merseburg Incantations

The Merseburg Incantations are two medieval magic spells, charms or incantations, written in Old High German. They are the only known examples of Germanic pagan belief preserved in this language...

and says that "these Idisi are obviously a kind of valkyrie, as these also have the power to hamper enemies in Norse mythology."