Aaron was a son of Susannah Croco Adams and Pressley Townsend Adams. The family is in the 1830 census for Wilkins, Allegheny, Pennsylvania. His father passed away in 1835. His mother and family are in the 1850 census for Wilkins, Allegheny, Pennsylvania: Susannah Adams 45, Aaron Adams 21, Presly Adams 17.

Aaron has moved to Lake Prairie, Marion, Iowa by the 1856 census. He is listed as a farmer and his future wife, is in the same household. Members of the household are: Green T Clark 33, Nancy Clark 31, Thomass J Clark 8, Louise A Clark 7, Emma M Clark 3, Lysetta Gregory 16, Aaron Adams 29, Tyler Murphy 26, Joseph N Stewart 30.

Iowa Marriage Records:
Name: Aaron Adams
Gender: Male
Spouse: Lucetta Gregory
Marriage Date: 16 Jul 1857
County: Marion
State: Iowa

1860 census Des Moines, Jasper, Iowa
Aaron Adams 31, PA, Farmer
Lucetta Adams 20, Iowa
Virginia M Adams 2, Iowa
Wimfield T Adams 9/12, Iowa
John Gregory 28, Indiana
Thos Gregory 16, Iowa
Oliver Gregory 12, Iowa
Susan A [Croco] Adams 55, Pa [mother]

Aaron enlisted in the 40th Regiment, Iowa Infantry, Union Civil War Volunteers. He entered 22 Aug 1864 as a private in Co. E and was discharged 20 Dec 1864 at the rank of Second Lieutenant due to a disability.

1870 census Monroe, Fairview, Jasper, Iowa
Census taken July 8th
Aaron Adams
41, Penn, US Post Master
Luretha Adams 29, Iowa, Keeping House
Virginia Adams 12, Iowa
Alwilda Adams 10, Iowa
Fremont Adams 8, Iowa
Ambrose Adams 6, Iowa
Susana Adams 1, Iowa
John [Pressley] Adams 2/12, Iowa

1880 census Fair View, Jasper, Iowa
Aaron Adams 51, Penn, Farmer
Lucettie Adams 40, Iowa, Keeping House
Freemont Adams 18, Iowa, at House
Alwilda Adams 19, Iowa, at House
Ambrose Adams 16, Iowa, at House
Presley Adams 10, Iowa
Oliver Adams 8, Iowa
Edgar Adams 6, Iowa
Byron Adams 5, Iowa
Guy Adams 1, Iowa

1900 census Tribune, Greeley, Kansas
Aaron Adams 71, Jul 1828, Penn, Farmer, married 8 years
Mary A Adams 49, Nov 1850, Ohio, married 8 years
Edward B Fankell 81, Nov 1818, Ohio, widowed, F-in-law