Conversation so far:
What did J. Paul Getty do in his later years?
J. Paul Getty remained an inveterate hard worker, boasting at age 74 that he often worked 16 to 18 hours per day overseeing his operations across the world
Was J. Paul Getty a wealthy man?
At J. Paul Getty's death, he was worth more than $6 billion
Was J. Paul Getty married?
J. Paul Getty was married and divorced five times. He had five sons with four of his wives
What was J. Paul Getty's greatest accomplishment?
J. Paul Getty founded the Getty Oil Company, and in 1957 Fortune magazine named him the richest living American
Was the party J. Paul Getty put on for the 16th Duke of Norfolk a success?
The failure of the event made J. Paul Getty the object of ridicule and he never threw another large party again.
Are there any other interesting aspects about this party J. Paul Getty put on besides the failure?
Party goers were irritated by J. Paul Getty's stinginess, such as not providing cigarettes and relegating everyone to using creosote portable toilets outside

Question: what is the most important fact in this article?
Self-contained rewrite: What is the most important fact in J. Paul Getty's life?