"Strength." A daughter of Thor and Sif, according to several kennings in Skáldskaparmál. Snorri Sturluson says that Sif can be periphrased as Mother of Thrúdr, while kennings for Thor are Thrúdr's Father and Sire of Thrúdr. In the poem Ragnarsdrápa by Bragi Bodasson, a kenning for the giant Hrungnir is Þrúðr's Thief, but there is no mention of her abduction in any of the existing texts.
- Ragnarsdrápa, 1.
- Skáldskaparmál, 4, 18, 21, 48.