Isadore Klein's birth name is Isidore Noah Klein.
Isadore Acario, since they're both Greek
His full name is Joseph Isadore Lieberman.
Dore Schary's birth name is Isadore Schary.
Izzy Sparber's birth name is Isadore Sparber.
Izzy Singer's birth name is Isadore Singer.
Irving Klaw's birth name is Isadore Klaw.
Friz Freleng's birth name is Freleng, Isadore.
Irving Szathmary's birth name is Isadore Szathmary.
Rabbi Myers's birth name is Isadore Myers.
Joe Lieberman's birth name is Lieberman, Joseph Isadore.
Irving Lippman's birth name is Irving Isadore Lippman.