Complex sentence: They had a daughter and a son, Donald Beauman, a Formula Two motor racing driver who was killed on 9 July 1955 at the Leinster Trophy race at Wicklow, Ireland, when his Connaught A-type car crashed.
Split into simpler sentences: They had a daughter and a son, Donald Beauman, who was a Formula Two motor racing driver. He was killed on 9 July 1955 at the Leinster Trophy race at Wicklow, Ireland, when his Connaught A-type car crashed.