NewsSocietyShiny ShotsArtsReal Estate NewsLifestyleUSA TODAYObituariesE-Edition UPDATE: Billionaire buys ‘spec’ mansion on Everglades Island for $49 million: deed Investments manager James G. Dinan of York Capital Management and wife buy house at 520 Island Drive with lakefront on two sides, thanks to its site on the north end of Everglades Island. Palm Beach Daily News A billionaire hedge-fund manager is the new co-owner of a never-lived-in California-style contemporary mansion that just sold for a recorded $49.142 million on Everglades Island. James G. Dinan and his wife, Elizabeth R. Miller, bought the house with waterfront on two sides at 520 Island Drive, according to the deed recorded Tuesday by the Palm Beach County Clerk’s office.