Morgan Calvin Hamilton (February 25, 1809 – November 21, 1893) was an American merchant, politician from Alabama and Texas, and brother of Andrew Jackson Hamilton. Both men were unusual as Unionists in Texas during the American Civil War.[1]
He moved to Texas when it was still part of Mexico and worked there as a merchant. For six years, from 1839 to 1845, he served in the war department of the Republic of Texas, first as clerk and from 1844 to 1845 as Secretary of War. He settled in Austin.