Urðr is together with the Norns located at the well Urðarbrunnr beneath the world ash tree Yggdrasil of Asgard. They spin threads of life, cut marks in the pole figures and measure people's destinies, which shows the fate of all human beings and gods. Norns are always present when a child is born and decide its fate. The three Norns represent the past (Urðr), future (Skuld) and present (Verðandi).
Urðr is commonly written as Urd or Urth. In some English translations, her name is glossed with the Old English form of urðr; Wyrd.