Pension records for the 1st Iowa Cav list this man:

Name: Kimberly, Wesley C. Date: 06-AUG-1890 State/arm Of Service: Iowa Cav Company/regiment: F,1

So the 1st Cav roster had his middle initial P, but the pension says C.

If I find his pension certificate number I'll let you know, or if I locate marriage information on Anna Maude. I can't locate any of them so far in 1930.