Born March 16, 1813, in Washington County, Alabama, William arrived in Texas December 22, 1832 after his father Peter bought some property there. He lived in what is now Montgomery County and worked his father's farm with his brother Matthew until the two siblings enlisted in the Texas army on April 12, 1836. Nine days later, as a member of William Ware's Company, both William and Matthew fought at the Battle of San Jacinto. William stayed in the army until July 13, when he was discharged just outside of Victoria. He passed away on October 25, 1844 and buried in the Cartwright family cemetery. The State of Texas erected a monument at his grave in 1936.