William Castle's birth name is Schloss, William.
Phoebus Castle's birth name is William A. Febus III.
Ben Castle's birth name is Benjamin Castle.
Gabe Castle's birth name is Gabriel Castle.
Cait Castle's birth name is Caitlin Castle Dellagloria.
Josh Castle's birth name is Joshua Walton Castle.
Diana Castle's birth name is Diana Szlosberg.
Irene Castle's birth name is Foote, Irene.
Vernon Castle's birth name is Vernon Blyth.
Don Castle's birth name is Marion Goodman Jr.
Michael Castle's birth name is Michael Newbold Jackson.
Barbara Castle's birth name is Barbara Anne Betts.
Mary Castle's birth name is Mary Ann Noblett.