Heath Ledger's family believe the late actor may have fathered a secret love child, according to a news report in Australia. Heath was a 17-year-old schoolboy when he had an affair with an older woman whowas 25 years old.

If it is confirmed Heath Ledger's multi-million dollar estate will be split between his two-year-old daughter Matilda Rose with Hollywood actress Michelle Williams, and his secret love child.

Ledger's uncle, Hadyn Ledger, in Heath's home town of Perth, Western Australia, told Sydney's Daily Telegraph newspaper exclusively: "There is a very real possibility that Heath was the father.

Another family source told the newspaper: "She had the baby. Everyone lived under the assumption that she was the daughter of the mother's boyfriend and that is how she has been brought up."

The woman is now married and has a family of her own. I am sure her life is not going to be very peaceful and normal for long. Ledger's death has exposed the bitter rift in the family between father Kim and his estranged brothers, Haydn, Mike and Wayne.