[7] Þrúðgelmir: According to Vafþr 29, the only Old Norse source where this name is mentioned, this was the son of the primeval giant Ymir. The name means ‘strong noise-maker’. The first element is derived from þrúðr f. ‘strength’ (also the name of Þórr’s daughter), and ‑gelmir ‘noise-maker’ (cf. ModSwed. dialects galma ‘scream’; AEW: galmr) is the second element in the names of three generations of giants, Aurgelmir (st. 5/5), Þrúðgelmir and Bergelmir (st. 6/3), grandfather, father and son.