Kiefer Sutherland has had an incredible career - and, at times, a rocky personal life - but he has described fatherhood as the defining experience of his life. The 24 actor - who is the son of late actors Donald Sutherland and Shirley Douglas - became the stepfather of Michelle Sinclair (née Kath) when he was 20 years old after marrying Michelle's mother, Camelia Kath. Michelle was born during Camelia's previous marriage to former Chicago singer-songwriter Terry Kath, who died in 1978. Kiefer's only biological daughter is Sarah Sutherland.