Cornelius Hill was a prominent Oneida leader and Episcopal priest who lived from 1834 to 1907 in the United States. Known as Onangwatgo, he served as the final hereditary chief of the Oneida Nation. Throughout his life, he worked extensively to protect his people's land rights and legal interests against government pressure and settler encroachment. In his later years, he was ordained as a priest, becoming the first member of his nation to receive such holy orders, and he served his community as a spiritual leader until his death.