According to one of Heath Ledger's estranged uncles, the late actor may have another child besides his daughter, Matilda Rose, with actress Michelle Williams. According to the Daily Telegraph, a 17-year-old Heath reportedly dated a 25-year-old woman who was already in a relationship with another man. She discovered she was pregnant after the affair ended and later gave birth to a baby girl. Heath's uncle Haydn told the paper, "There is a very real possibility that Heath was the father." There's been no official word from Heath's family Haydn's comments.