Diane Kemper

Real estate heiress Diane Kemper is one of four Goldman siblings who co-own Solil Management, which owns at least 400 properties in New York City. Trophies include retail and office space along Madison Avenue in midtown and high-end coops on the Upper East Side. Diane is the second-oldest child of late patriarch Sol Goldman, who started buying up foreclosed properties for bargain prices in the 1950s. Diane headed the residential leasing department for several decades. She scaled back due to health issues several years ago.They also own a 17% stake in the World Trade Center developments in lower Manhattan.