Emperor Hedrich I ruled shortly after the time of Sigmar. During his reign, Johann Helstrum founded the Cult of Sigmar. Near the end of his life, he recieved the Runefangs from the runesmith Alaric the Mad.
Sources
- Warhammer Armies: The Empire (8th Edition) p.16
- Warhammer Rulebook (8th Edition) p.172