Alexander Faulkner was born on January 14, 1816 in Humphreys County, Tennessee to Jonathan Falkner and Matilda VanBuren.

He married Elizabeth Plant in about 1835 in Waverly, Tennessee.

They were the parents of Jefferson E Faulkner, Elizabeth Hester Faulkner, William J Faulkner, Narcissa Edell Faulkner, Alfred Faulkner, and Harrison Faulkner.

He died sometime between 1860 and 1870 and probably in Graves County, Kentucky.

Alexander Faulkner sold land in Graves County, Kentucky to the New Orleans & Ohio Railroad on October 10, 1853.

Alexander Falkner is mentioned as a son in the Last Will and Testament of Jonathan Falkner dated August 25, 1859.