Heir to part of the Wal-Mart fortune, Ann Walton Kroenke has a net worth of $5.1billion as of May 2012, according to FORBES. She inherited chunk of Wal-Mart stock after her father James (Bud) Walton, cofounder of Wal-Mart with brother Sam, died in 1995. She is married to billionaire Stanley Kroenke, a real estate developer, owner of pro basketball's Denver Nuggets, hockey's Colorado Avalanche, plus stakes in football's St. Louis Rams and English soccer titan Arsenal. He has a separate billion-dollar fortune.