Complex sentence: She had no children from any of her marriages, though she was the first step-mother to Charlie Chaplin's sons Charles Chaplin, Jr. and Sydney Chaplin whose mother was Lita Grey.
Split into simpler sentences: She had no children from any of her marriages. Though she was the first step-mother to Charlie Chaplin's sons Charles Chaplin, Jr. and Sydney Chaplin whose mother was Lita Grey.