Father, with Shirley Temple, of daughter Linda Susan Agar (born on January 30, 1948).
He has an entry in Jean Tulard's "Dictionnaire du cinéma/Les acteurs" published in Paris in 2007 by RobertLaffont/Bouquins (page 14).
His marriage to actress Shirley Temple started his film career in the 1940s.
In 1972 "Famous Monsters of Filmland" Magazine reported John Agar "Dead"!! Agar lived to autograph several copies of the articles.
Interviewed in Tom Weaver's books "Interviews with B Science Fiction and Horror Movie Makers" (McFarland & Co., 1988) and "They Fought in the Creature Features" (McFarland & Co., 1995).
The claim that he had done a "pink film" in Denmark was a gag. He starred in Journey to the Seventh Planet (1962), which was shot in Denmark, by writer/producer/director Sidney W. Pink.