Matilda Ledger, the three-year-old daughter of late Australian actor Heath Ledger, will be the eventual owner of an Oscar if he wins a statuette Sunday, but his family will accept the award on his behalf. The Academy of Motion Picture Arts and Sciences said on Wednesday it has decided if Ledger wins a rare posthumous Oscar for his performance as the villainous Joker in “The Dark Knight,” Matilda would receive the Oscar after she turns 18. Ledger, 28, who died last year of a prescription drug overdose, is widely expected to win the best supporting actor Oscar at the February 22 Academy Awards in Hollywood after picking up virtually every other award in that category this season. He would be only the second actor to receive an Oscar after death, following Peter Finch who won in 1976 for “Network,” and his family will be on hand if he does win, traveling from the actor's home town of Perth in Western Australia for the ceremony.