I think it's possible that the Cannon Co, TN Vassar family was connected in some way to the Vassar family of Amelia Co. VA and Halifax Co. VA.
Nathaniel Vassar, who came to Halifax Co. VA from Amelia Co.about 1779 had a son named Levi, probably born after he moved to Halifax Co.
Nathaniel's parents were Abraham and Rhoda (Harris) Vassar; Abraham died in Amelia county @1778, after making deeds of gift to his sons, Nathaniel and Samuel Harris Vassar.When Nathaniel moved to Halifax Co, VA, he bought land from my ancestor, William Harris, who I think was Rhoda (Harris) Vassar's sister. William Harris's son, Elijah, moved to the southern part of Wilson Co, TN (very near the border with Rutherford/Cannon co.) about 1828, and Elijah's son, Claiborne Harris, moved to the part of Rutherford Co. that became Cannon Co. Cannon Co. was formed 1836 from the eastern portion of Rutherford Co.
I have more information on this Vassar family in Amelia Co. and Halifax Co.