Bandobras Took "The Bullroarer" was the son of either Thain Isengrim II or Isumbras III (sources differ) of the Took line, Bandobras was famous for averting a goblin invasion of the Shire at the Battle of Greenfields, and personally slaying the goblins' leader, Golfimbul.
It is possible J.R.R. Tolkien was inspired by George von Hohenzoller
- "He [the Bullroarer] charged the ranks of the goblins of Mount Gram in the Battle of the Green Fields, and knocked their king Golfimbul's head clean off with a wooden club."
- ― An Unexpected Party, The Hobbit
- "She [Tolkien’s aunt Grace] alleged that the family name ['Tolkien'] had originally been ‘von Hohenzollern’, for they had emanated from the Hohenzollern district of the Holy Roman Empire. A certain George von Hohenzollern had, she said, fought on the side of Archduke Ferdinand of Austria at the Siege of Vienna in 1529. He had shown great daring in leading an unofficial raid against the Turks and capturing the Sultan’s standard. This (said Aunt Grace) was why he was given the nickname Tollkühn, 'foolhardy'; and the name stuck."
- ― J.R.R. Tolkien: A Biography