Jerry Lee Lewis' "third marriage, to Myra Gale Brown, lasted for 13 years, from December 1957 to December 1970 (although the couple went through a second marriage ceremony because his divorce from Jane Mitchum was not complete before the first ceremony took place). They had two children together."
"She was Lewis's first cousin once removed and was only 13 years old at the time. (Brown, Lewis, and his management all insisted that she was 15). Lewis was 22 years old."