Zack, no luck in trying to find a new email for you. Since my original post, I have found the cemetery for A.P. and Rachel Willcoxson (Franks Cemetery, Richfield Twnshp, Adams Co., IL). I just found "A" (can't read his first name written by census taker) in 1870 U.S. Census, Payson, Adams Co., IL (Image #27 on Ancestry.com). Rachel died in 1874 and A.P. died in 1875. I found their daughter, Carrie, in Scotia, NE in 1885. I don't know where Carrie was from 1875 until 1885, although her grandmother, Lucretia Collier, remained in Payson until her death in 1882. Carrie married James G. Cox of Meade Co., KY. Carrie is my ggrandmother on my father's side of the family. Anyway, lots to share if you ever read this post.
Janet Cox/OKC/OK. The 1870 census indicates that A.P. was born in Kentucky, but I can't figure out which Willcoxson family he belongs to, although there is an "A" Wilcoxson in a family in Shelby, KY that matches his birthdate of around 1839, according to a calculation from date of death on his tombstone and the 1870 census.