Question: Sequoyah Bay State Park is on the western shore of Fort Gibson Lake in Wagoner County, Oklahoma, it offers several campgrounds, each named for a notable chief of the Five Civilized Tribes, include Chief Osceola, born as Billy Powell, became an influential leader of the Seminole, in which state?
Sentence (from "Osceola"): Of mixed parentage, Creek, Scots-Irish, black, and English, he was raised as a Creek by his mother, as the tribe had a matrilineal kinship system.
Relevant evidence: No