Brigham

Brigham Young, an early Mormon leader who lead them to the Salt Lake Valley, and the first governor of Utah, who essentially ran the territory as a theocracy, allowed slavery, prohibited black people from attaining priesthood or temple ordinances in the church (something which continued until 1978, and to this day women still cannot hold the priesthood), and oversaw several brutal massacres of indigenous people and the general appropriation of their land, in addition to the Mountain Meadows Massacre during the Utah War in which at least 120 non-mormon settlers were killed. He had, according to Wikipedia, at least 56 wives and 57 children. Namesake of Brigham Young University.

Brigham Young was one of the founders of the Mormon religion.

Brigham Young was the successor to Joseph Smith as the leader of the Mormon pioneers. He led them west from Illinois to the valley of the Great Salt Lake, and directed the settlement of a large portion of the American West.