Madame Nhu
Trn L Xun , popularly known as Madame Nhu, was the de facto First Lady of South Vietnam from 1955 to 1963. She was the wife of Ng nh Nhu who was the brother and chief adviser to President Ng nh Dim. As Dim was a lifelong bachelor, and because she and her family lived in Independence Palace, she was considered to be the first lady.
Trn L Xun was born into a wealthy aristocratic family in Hanoi, French Indochina, then part of the French colonial empire. Her given name means Springs Tears Her paternal grandfather was close to the French colonial administration, while her father, Trn Vn Chng, studied law in France, and practicing in Bac Lieu in the Mekong Delta before marrying into the ruling imperial dynasty. Her father also served as the first foreign secretary for Indochina under Japanese occupation. Her mother, Thn Th Nam Trn, was a granddaughter of Emperor ng Khnh and a cousin of Emperor Bo i.
Source: Wikipedia