67. ANN WALTON KROENKE
$7.5 BILLION SELF-MADE SCORE: ! SOURCE: WALMART AGE: 70 RESIDENCE: ELECTRA, TX PHILANTHROPY SCORE: She inherited her fortune when her father, Bud Walton, brother of Walmart founder Sam, died in 1995. She is married to Stanley Kroenke (No. 49) and is not involved with the family business.