Complex sentence: Franklin was born in Kensington, London into an affluent Anglo-Jewish family, and married Muriel Frances Waley (1894--1976); their daughter was Rosalind Franklin, one of five children.
Split into simpler sentences: Franklin was born in Kensington, London into an affluent Anglo-Jewish family. He married Muriel Frances Waley (1894--1976); their daughter was Rosalind Franklin, one of five children.