Rebecca was born in 1759 in Hopewell, Virginia, the daughter of George Carlock and Fannie Mildred Plemons.
She died in 1801 in Concord, North Carolina, United States.
Her husband was Benjamin Urie Shinn Sr. They were married, but the date and place have not been found. Their eight known children were Joseph (?-?), Abigail (1796-1844), Solomon (?-?), Catherine (?-?), Sarah (?-?), Benjamin (?-?), Moses (?-?) and Josiah Carlock (?-?).