Jerone is the brother of Jeremy and a prisoner in the prison of Yew.
Talking with him through the cell door in Ultima V, Jerone spoke of how he'd been thrown into jail because of heresy. He had dared to say that Lord British is still alive, after seeing him in an apparition over his campfire during the night. Now he could only wait for his brother Jeremy to pay the fine of 500 gold coins. He'd tried escaping as his brother gave him lockpicks, but he'd gotten caught each time.