Moses Allen, soldier and settler, was born on December 14, 1808, in St. Helena Parish, Louisiana, the son of William and Hannah (Pride) Allen. He moved to Texas in 1826 and in 1838 was granted a headright certificate for a league and a labor of land by the Board of Land Commissioners of Jefferson County as a first-class grantee under the Constitution of the Republic of Texas. The 1840 tax roll listed Allen as living in Jefferson County and owning thirty-eight cattle and one wooden clock. The tax list for 1846 lists Moses Allen with property in Jefferson County. He was an original landowner in Bell County, which was established by an act of the Texas legislature in 1850.
He and six of his brothers participated in the Texas Revolution. Moses was in B. J. Harper's Company for three months in 1836, for which he was issued a bounty certificate for 320 acres of land. For his participation in the siege of Bexar he received a donation certificate for 640 acres of land that he located in Bell County. He is on the muster roll of volunteers in Captain Chesshire's Company in 1835 and received 320 acres of land for this service. His name is on a list of volunteers who marched from the Natchez River on November 16, 1835, under the command of Martin B. Lewis.
Allen married Nancy A. Williams, the daughter of Hezekiah and Nancy (Reams) Williams, who also came to Texas from Louisiana before 1830. In the 1850 census Moses and Nancy were living in the Milam and Williamson district with their three children; also living with them was Marvin Williams, age twenty, born in Louisiana, and probably a relative of Nancy's. By 1860 Allen had moved to Belton in Bell County, where he resided until his death on October 1, 1865.