Greetings!In the 1870 census, there was a Calvin H. Tiffany, ae 15, living in Athens with Isaac Tiffany and his wife Maria.I assume that these were Calvin's parents.Also living in the household were Bradley 13, Alvin 10, and Ida May 1.
The 1860 census has Isaac and Maria Tiffany, also in Athens, with children John 6, and two unnamed sons.They were living next door to Henry and Gertrude Beckett, whom I believe to be Isaac's mother and step-father.
The 1850 census has Henry Beckett in Athens, with wife Gertrude, James Beckett 23, Isaac Tiffany 18, and Lucy Ann Tiffany 13.
According to one of the gedcoms at ancestry.com, Isaac Tiffany (8/14/1830 - 9/6/1893) was the son of Calvin Tiffany and Gertrude Best.Isaac was married to Lucy Maria Wilcox, the daughter of Ephraim Wilcox and Marinda Steans, in 1853.There is further information on these individuals at ancestry.com, including a nice obituary of Isaac's sister Lucy Ann.
That's all the information I have, but I trust that is of some help to you.