Robert Grunwald † (brother)
Harold Grunwald was a German Shadowhunter who lived in the early 18th century.
In 1721 Harold and his brother Robert set fire to a local tavern in which the entire local werewolf pack was gathered. This horrified the Clave and resulted in a trial which led to the brothers being handed over to mundane authorities, who hanged them. The werewolf hunts died away completely after this
- The Shadowhunter's Codex (mentioned only)