Richard Cousins, former CEO of Compass Group

"A multi-millionaire tycoon who was killed alongside his family in a seaplane crash on the Hawkesbury River, north of Sydney, has left about $71 million to Oxfam after changing his will a year earlier."

https://au.news.yahoo.com/ceo-died-sydney-seaplane-tragedy-leaves-71-million-oxfam-074612140.html