The following was extracted from www.findagrave.com

Information submitted by Brandi Dudlicek

Birth: Aug., 1829
New York, USA
Death: unknown

He appears on the 1900 US Census (taken on 7 Jun 1900). He was living with his brother, Sydney, in Bremen Township. Unable to find him on the 1910 US Census.

He was a U.S. Civil War Soldier. Here's that information:

Name: Wesley A Briggs
Residence: Thornton, Illinois
Enlistment Date: 8 Jun 1862
Rank at enlistment: Wagoner
State Served: Illinois
Survived the War?: Yes

Service Record: Enlisted in Company Battery M, Illinois 1st LA Batty M Light Artillery Battery on 12 Aug 1862. Mustered out on 24 Jul 1865 at Chicago, IL.

Sources: Illinois: Roster of Officers and Enlisted Men
Burial:
Bachelor's Grove Cemetery
Midlothian
Cook County
Illinois, USA