I had been looking and looking for my 3rd great-grandparents Louis and Mary White Cooper together in the 1870 Census in Grimes County Texas but with no success. I did find my grams in 1880 as a widow, and have been linking her children with wives and husbands since then.
I finally, without hurting these tired soles of mine, jumped for joy when I ran across the 1880 Agricultural Census taken in Anderson, Grimes County, Texas on June 1st 1880, and saw her name, Mary Cooper!!!