But Ledger's father, Kim Ledger, told the Australian newspaper The Sunday Times that the family had given all the money to Matilda and that there had been no challenge from Williams.
"There is no claim," the newspaper quoted Kim Ledger as saying in a report published Sunday. "Our family has gifted everything to Matilda."
The actor signed the will on April 12, 2003. It lists assets and cash of just $118,000, but the actor's estate is believed to be worth more than $16.3 million, the newspaper said.
Adelaide accountant Mark Dyson, who is an executor of the estate, said he could not reveal how much Matilda would inherit.