Caleb III was one of seven children born to Elisabeth Abel, Jr. (b. 1758) and Caleb Sharp, Jr. (b. 1752), of Conway, Massachusetts. He was born on April 13, 1776.
Sources Consulted
Conway, Massachusetts vital records
A History of Deerfield, Massachusetts, Vol. II, George Sheldon, 1895-96, p. 99 ("Caleb, Sharp" in genealogy section)