Oonagh Guinness (22 February 1910 – 2 August 1995) was an Anglo-Irish socialite, society hostess and art collector, and the second wife of Dominick Browne, 4th Baron Oranmore and Browne.

[2] Oonagh was a prominent hostess, particularly after her second divorce in 1950, when the Luggala Estate became a centre of Irish social life.

Nobody could keep away: Dublin intelligentsia, literati, painters, actors, scholars, hangers-on, toffs, punters, poets, social hang-gliders were attracted to Luggala as to nowhere else in Ireland — perhaps even in Europe, from where many would come.

Philip Kindersley, and they had two children,[2] though only one lived to reach adulthood as her daughter Teresa died as a teenager and is buried on the shores of Lough Tay near Luggala.

[1] From 1957 to 1965, she was married to Miguel Ferreras Aciro (1927–1999), a New York dress designer.