Question: What man born as Billy Powel leader of the Seminole in Florida, was of mix parentage including an ethnic group in Ireland, found mostly in the Ulster region and to a lesser extent in the rest of Ireland?
Sentence (from "Osceola"): Osceola (1804 – January 30, 1838), born as Billy Powell, became an influential leader of the Seminole in Florida.
Relevant evidence: Yes