He served as a private in Captain William Dooley's Company; and as a Lieutenant and Quartermaster in Thomas McCrory's 2nd Regiment, West Tennessee Militia.
He married Leah Reagan, a Virginia native, on March 26, 1805, in Blount County, Tennessee.
[5] He was an unsuccessful candidate for re-election to the Twentieth Congress in 1827, and lost his seat to frontiersman Davy Crockett.
[citation needed] Alexander died on November 1, 1848, aged 67, in Marshall County, Mississippi.
He is interred at Alexander-Pryor Family Cemetery, Laws Hill, Marshall County, Mississippi.