William Barron Hilton was an American business magnate, philanthropist and sportsman. The second son and successor of hotelier Conrad Hilton, he was the chairman, president and chief executive officer of Hilton Hotels Corporation and chairman emeritus of the Conrad N. Hilton Foundation. Hilton, a notable pilot and outdoorsman, was also a founder of the American Football League as the original owner of the Los Angeles Chargers, and helped forge the merger with the National Football League that created the Super Bowl. Like his father before him, he pledged 97 percent of his wealth to the humanitarian work of the Conrad N. Hilton Foundation. At the time, the gift was projected to increase the foundation's endowment from $2.9 billion to $6.3 billion, and will make his estate the organization's most significant donor.

Conrad Nicholson Hilton was an American businessman who founded the Hilton Hotels chain. From 1912 to 1916, Hilton was a Republican representative in the first New Mexico Legislature, but became disillusioned with the "inside deals" of politics. In 1919, he purchased his first hotel, the Mobley Hotel in Cisco, Texas, for $40,000, and subsequently capitalized on the oil boom. The rooms were rented out in eight-hour shifts. He continued to buy and sell hotels, and eventually established the world's first international hotel chain. When he died in 1979, he left the bulk of his estate to the Conrad N. Hilton Foundation.