Patricia, Valentine is such and odd name and also I have only seen it one other time, I think it was either Fairfield or Putman Co Ohio , where it appears. If you can tie your val;entine to this family, than I can take you back a great deal futhur.No doubt the same family, because names followed big time.
I have been at a stand still for some time due to my husband of 55 + years health has failed so rapid. Maybe some day I will be able to work again like I have in the past.
Also if you will look for the name spelt Kettner/you will be able to tie a lot of loose ends to gather.
I beleive in Ohio you will find it spelt either Ketner/Kitner. Many family members dropped one t.