William at the age of 30 years old, enlisted in the Confederate States Army on 16 May 1861 at Endora, Shelby County, Tennessee. He was mustered on the same day as a 1st Lieutenant in Capt. John H. Morgan's Company of the 13th Tennesse Volunteers. He received his commission on 30 May 1861 and appointed adjutant. He was promoted to Lt. Colonel on 3 December 1861. William was mortally wounded at the Battle of Murfreesboro on 31 December 1862 and died 4 Janaury 1863.

1850 United States Federal Census
Name: Wm Morgan
Age: 20
Birth Year: abt 1830
Birthplace: Tennessee
Home in 1850: Northern Division, DeSoto, Mississippi
Gender: Male
Family Number: 498
Household Members - Name/Age:
John H Morgan 45
M Morgan 39
Wm Morgan 20
J B Morgan 19
J H Morgan 11
M E Morgan 4

W E Morgan