Gunnr (alternatively Guðr) is one of the named Valkyries in Norse mythology, specifically referenced in the Völuspá (st. 30/7; NK, p. 7), Helgakviða Hundingsbana II (st. 7/4; NK, p. 152), and the Prose Edda. Her name is an Old Norse term that translates to "battle". The Valkyries Gunnr, Rota, and the young norn Skuld were said to decide the outcome of battles, and, at its conclusion, would ride out to take the slain. Gunnr was also a feminine given name among Norsemen. The modern forms Gun and Gunn remain in use as a feminine given name in Scandinavia. The word is from Proto-Germanic *gunþiz, a common element of Northern and Western Germanic names. It is often used as the second element in feminine names (as in Hildegund), and as the first element in masculine names (as in Gunther). The earliest attestation of the name is on the Rök Stone where it occurs as part of a kenning for wolf:

Valkyrie

Gunnr is mentioned in the Völuspá in a list of valkyries, Gunnr, Hildr, Göndul / ok Geirskögul. The Darraðarljóð gives Guðr as one of six names of valkyries. In the Prose Edda Gunnr is singled out along with Róta and Skuld as one of the valkyries who always ride out to decide battles and take the slain. Another mention of Gunnr specifically states that those named are "Odin's Valkyries":