In an antique shop in Delaware Ohio I found an old photo with the following info written on the back:
Mr Peter Fond and his wife Ruth Warner Vosburgh Fonda. Their home in Shopiere, Wis, across from the cemetery. She is the mother of Harriet Betsey Vosburg Buck - who was the mother of Glenn Buck - who was the father of Jean Buck Kaufman. He is no relation to us - was her 2nd husband.
Ruth Warner was probably the daughter of Hiram and Betsey Warner. Her first husband was William Vosburgh. The Harriet Betsey Vosburg mentioned married Byron Taylor Buck .
Peter Fond was probably the son of John Fonda and Margaret Hilts.