Logan, James or John (1725?–1780), an American Indian leader. His Indian name was Tah-gah-jute. He was born in Pennsylvania, the son of a Cayuga woman and Chief Shikellamy, believed to have been a Frenchman raised from childhood by the Oneida Indians. Logan was named for a friend of his father's, a Quaker who became chief justice of Pennsylvania. In 1770 Logan moved to live among the Ohio Valley Iroquois, the Mingo Indians. He was friendly toward the whites until 1774, when settlers massacred some of his people, including his wives and children. With Mingo and Shawnee supporters, Logan sought revenge, burning settlements and scalping whites. An eloquent statement of justification he reputedly made was quoted by Thomas Jefferson in Notes on the State of Virginia. Logan was killed by his nephew in a fight.