Michael Jackson's ex-wife Debbie Rowe has told an Irish newspaper the singer is not the biological father of their children, Prince Michael Jr. and Paris. Rowe, who was married to Jackson for three years between 1996 and 1999, claims her 8-year-old son and 7-year-old daughter were both conceived using anonymous semen brought from a sperm bank. She tells the Sunday World, "Michael knows the truth -- that he is not the natural father of Prince Michael Jr. and Paris. He has to come clean. "I have no information whatsoever about the identity of the donor