John Alexander was born on March 15th, 1807. John Alexander's father was Robert Crockett and his mother was Maria Dunlap. His paternal grandparents were Alexander Crockett and Mary Drake; his maternal grandfather was John Dunlap. He was an only child. He died at the age of 80 on January 1st, 1888.
John Alexander and Adaline were married in a religious ceremony on January 19th, 1842. They had a son and two daughters, named John Taylor, Ann Eliza and Elizabeth.