Wisdom's best film? But what happened to Michael Caridia?

Up in the World is the best Wisdom film but whatever became of Michael Caridia who played Sir Reginald, the naughty boy who makes Wisdom's life hell, sending him to wrong rooms and eventually having him thrown in prison until the big escape. This was and is a terrific movie, but I always wonder what happened to that child.Anyone else love this film?