 An immediate pledge of US$1.2 billion (proceeds from the sale of Hilton Hotels Corporation) was made, with a further US$1.1 billion due after his death.Barron cited the actions of his father, Conrad Hilton, as the motivation for his pledge.Conrad (Barron's father) had also left 97 percent of his estate to the foundation, and Barron contested his father's will to regain a sizable amount of the family fortune in a settlement.