Complex sentence: Winton's father, Gary, was "domineering" and died when Winton was 13; he was brought up by his mother Sheree Winton, an actress, and left school at 16; she committed suicide by drug overdose when he was 21.
Split into simpler sentences: Winton's father, Gary, was "domineering" and died when Winton was 13. He left school at 16; she committed suicide by drug overdose when he was 21.