Complex sentence: Gribbon was one of several comedy team partner with whom Shemp Howard worked, an original member of the Three Stooges and brother of Stooges Curly Howard and Moe Howard.
Split into simpler sentences: Gribbon was one of several comedy team partner with whom Shemp Howard worked. Howard had been an original member of the Three Stooges and brother of Stooges Curly Howard and Moe Howard.