Mining heirs Michael Wright and Angela Bennett knew they already gave up their interests in mining tenements likely worth in the billions of dollars since the 1980s, the court was told.
A claim by Julian Wright for one third of his family's multi-billion dollar fortune has failed, in large part because of a $70 million deal struck 13 years ago.
West Australian Ballet has received $7.5 million in donations for its endowment fund, and announced it would name a studio after major donors the Wright Burt Foundation.
Julian Wright has commenced legal action in the Supreme Court, claiming he was defrauded when he sold his share of the family company to his siblings, 'rich listers' Angela Bennett and the late Michael Wright.
The third daughter of late mining heir Michael Wright has succeeded in her bid to extract much more than she was left from his will, with a judge ruling she should get $25 million.
Some of Perth's top company directors and dealmakers, including Michael Smith, Ian Cochrane, Michael Ashforth and Tony Iannello have been recruited to help run prominent family companies.
Alan Robson, Jim McGinty and Jim Freemantle are among the Western Australian luminaries to receive honours as part of this year's Queen's Birthday awards.