sentences:  Upon her third rebirth, she began practicing seiðr and took the name Heiðr.Gullveig/Heiðr is solely attested in the "Poetic Edda", compiled in the 13th century from earlier traditional material.Scholars have variously proposed that Gullveig/Heiðr is the same figure as the goddess Freyja, that Gullveig's death may have been connected to corruption by way of gold among the Æsir, and/or that Gullveig's treatment by the Æsir may have led to the Æsir–Vanir War.