Michelle Williams is supposedly furious with Heath Ledger's family

HEATH Ledger's father, Kim, mother, Emma, and other family members are flying in for the "Dark Knight" premiere on July 14 for what some are calling a "sort of tribute" to him - but don't expect to see his ex, Michelle Williams, or daughter, Matilda.

An insider said, "Michelle is furious with Heath's family and threatening to boycott the premiere. Matilda is supposed to be the beneficiary of the will, but Michelle has seen nothing from them.

Heath didn't have much in cash, but there was a big house in LA and a back-end deal for 'Dark Knight' [that] could reap millions."

Ledger's will, made out in 2003 before Matilda was born, left everything to his father, mother and sisters. But Matilda is now considered the beneficiary, and Kim is the executor. Williams fears that by the time Matilda reaches 18 and can cash in on her inheritance, nothing will be left.

Years ago, Kim's brothers charged that he mismanaged their father's estate, losing millions. A rep for Williams didn't return repeated calls. via