Hi Sandra! While I don't have any information about Isabel's siblings, I can confirm her parents. The following is taken from The History of Wyandot County:
"NER L. UPDEGRAFF, son of Casper and Ann E. Updegraff, was born in Carroll County, Ohio, January 26, 1835. He resided with his parents till thirty-three years of age, and has been a resident of this township about forty years, spending the greater part of this time on the homestead where his mother now resides. He has always engaged in farming and stock. raising, and has been fairly successful. He inherited a small portion of land and has since purchased eighty acres, also some property in Carey. Mr. Updegraff was married, August 20, 1868, to Miss Isabel Plott, who died May 12, 1880. She was born in Pennsylvania October 20, 1837, her parents being Christian and Matilda (Widle) Plott, natives of Pennsylvania. In politics, Mr. Updegraff is a Democrat. He holds the offices of Trustee and Justice of the Peace, and has served in others. He was a member of the Methodist Protestant Church several years, but of late affiliates with the Christian, known better as the Campbellite Church."
I wish I could be of more help. By the way, I would be very interested if you have scanned the pictures you mentioned if you can e-mail copies to me. Let me know if I can help more. Thanks,
Clif Hunter
clif6368@yahoo.com