Morgan was an early settler in Sangamon County, Illinois, moving there prior to 1830. During the Black Hawk War, he served as a sergeant in Abraham Lincoln's company of the 4th Regiment of Mounted Volunteers. In 1833, he purchased forty acres of public land in Cass County, Illinois, where he lived until at least 1840.
U.S. Census Office, Fifth Census of the United States (1830), Sangamon County, IL, 152; Muster Roll of Abraham Lincoln’s Company of Mounted Volunteers; Isaac H. Elliott, Record of the Services of Illinois Soldiers in the Black Hawk War, 1831-32, and in the Mexican War, 1846-8 (Springfield, IL: H. W. Rokker, 1882), 100; Illinois Public Domain Land Tract Sales, Cass County, 68:141, Illinois State Archives, Springfield, ILU.S. Census Office, Sixth Census of the United States (1840), Cass County, IL, 28; Gravestone, Bethel Baptist Cemetery, Saidora, IL.