Ann Wagner gave birth to Priscilla Presley when she was 19 years old. She was married to Navy pilot James Wagner on Aug. 10, 1944. He died in a plane crash while returning home. Priscilla was just six months old at the time.
Her mother ultimately married Air Force officer Paul Beaulieu from Canada. After Ann Wagner married Beaulieu, he took over raising Priscilla and she eventually took his last name as hers.
(Source: Priscilla presley on Twitter)