"John Travolta" - His mother, Helen Cecilia (née Burke; January 18, 1912 – December 1978),[5] was an actress and singer who had appeared in The Sunshine Sisters, a radio vocal group, and acted and directed before becoming a high school drama and English teacher.
"Willie & Kate Tanner" - Gordon Shumway (adopted parents count ... right!?)
I'm pretty sure Mrs. Travolta died and then possessed John. The older he got the gayer he became and not in a good way. Instead of trying to look like a hot man, he looks like an old woman. Sort of like Edna Trumbill that old lady he played.