J.B. Pritzker

Grandchild of A.N. Pritzker (d. 1986), who, with sons Jay (d. 1999) and Robert, created industrial conglomerate Marmon (sales: $7 billion) and hotel chain Hyatt (735 hotels worldwide). Plan to pass control of empire to Jay's son Tom, cousin Nick and niece Penny collapsed in 2001; family agreed to split empire 11 ways, drawing lawsuit by Robert's 2 youngest children, Matthew and Liesel. Settled for $1 billion. Dynastic carve-up in full swing. Sold undisclosed stake in Hyatt to the Walton family's private equity firm, Madrone Capital, and Goldman Sachs for $1 billion last August. Five months later sold 60% of Marmon to Berkshire Hathaway for $4.5 billion; will sell remainder by 2014.