Group 1 - Australian billionaire Harry Triguboff's grandson, Ariel Triguboff Hendler, purchased an unrenovated residential property in Watsons Bay for AUD 15.7 million [1][3] - The property was sold by developer Jason Camuglia, who had acquired it for AUD 12.38 million in 2021 [3] - Ariel Triguboff Hendler is the asset management director at Meriton and is part of a wealthy family with significant real estate holdings in the area [3][5] Group 2 - The Triguboff family is a prominent name in the Watsons Bay area, which is home to various wealthy individuals, including film director George Miller and former Westfield CEO Steven Lowy [5] - The real estate market in Watsons Bay has been active, with a recent record sale of AUD 35.5 million for a beachfront mansion by a mysterious buyer [7] - The area is characterized by a unique market with property prices ranging from AUD 5 million to over AUD 30 million, attracting high-profile buyers [7]