Note 29 — The Ballad of Vafthruthnir
Henry Adams Bellows translation
Bergelmir: when the gods slew Ymir in order to make the world out of his body, so much blood flowed from him that all the frost-giants were drowned except Bergelmir and his wife, who escaped in a boat; cf. stanza 35. Of Thruthgelmir (“the Mightily Burning”) we know nothing, but Aurgelmir was the frost-giants’ name for Ymir himself. Thus Ymir was the first of the giants, and so Othin’s question is answered.