From Warhammer 40k - Lexicanum
Sigvald Grimhammer was Great Wolf of the Space Wolves in early M41. In 440.M41, he was murdered by a Dark Eldar Succubus on the world of Xor. He was succeeded by the current Great Wolf, Logan Grimnar.
- 1: Champions of Fenris - A Codex: Space Wolves Supplement - Saga of the Great Wolf