Served as an associate justice of the U.S. Supreme Court from 1837 to 1865.
He served in the War of 1812.
He sided with the majority in the 1857 case Dred Scott v. Sandford, which ruled that African Americans weren't citizens and the federal government had no power to regulate slavery in federal territories.
He had a sister named Mary.
He was nominated to the Supreme Court by President Andrew Jackson.