When Alexander Culbertson was born in 1792, in Laurens, Laurens, South Carolina, United States, his father, Robert Culbertson, was 43 and his mother, Mrs. Dolly Pleasant, was 40. He married Elizabeth Johnson in 1808, in Laurens, South Carolina, United States. They were the parents of at least 6 sons and 5 daughters. He died about 1875, in Shelby, Alabama, United States, at the age of 83.