Hello:
just saw your query on Hannah Bice: She is wife of Terrell Bice.
Mary Pettit married my Ggrandfather Nathan Bice 1803. He is a brother to Terrell 1807.
Nathan and Terrell are sons of Abraham Buis b 1763,SC. Moved to Ga and Nathan on to Al. Terrel died in Civ. War. Also Nathan had a son named Terrell married to Elizabeth, sons nathan and james. He was captured and died on way to prison. My Grandfather John Caleb and His brother Terrell served in the 51 St. Partison Rangers. Terrell, Hannah husband may have been in a unit from Ga.
In Mary's father will(Joseph Pettit), he mentions daughters Mary and Hannah.
So, I believe that Hannah is also a Pettit sister to My Mary.
The nathan Bice b. 1848 GA that is listed in 1860 Census, I believe is Terrell and Hannah Son. Son Jonathan and Terrell is with Mother Hannah in census you mentioned. Also Daughter Martha, married a Johnson and Hannah is listed with this family the next census. You are welcome to see it.
My tree is on line. Sarah Bice Bierbrodt