I was researching the Cather name and saw your message. I think my relatives are from Virginia as I visited there with my Great Aunt when I was very young but I don't remember what city. My great grandfather's name was Clarence Cather who married Nellie Donahue.
My Grandmother was Mary C. Cather and she had four siblings. I have many Cather cousins here in California. Are you a descendant of Willa Cather? My grandmother said she was related to us and had many records dating back to the Civil War but we are still going through her papers and haven't found them as of yet.
I would love to have any info that you have on the Cather family. I will let you know if I find anything that you might find interesting.