On 20 October 1930, Koenigswarter was married to Nadine Lise Raphäel (1911–1932), a daughter of Jenny (née Cahn) Raphäel and Maurice Raphäel, a
Chevalier de la Légion d'honneur. Through her aunt Flora Raphäel, (the wife of banker
David David-Weill, who was chairman of
Lazard Frères), she was a first cousin of
Pierre David-Weill and
Jean David-Weill. They were the parents of one child before Nadine died on 13 May 1932, just twenty years old. On 15 October 1935, he was married to
Kathleen Annie Pannonica "Nica" Rothschild, the youngest child of the late
Charles Rothschild (a son of the
1st Baron Rothschild) and
Rózsika Edle (née von Wertheimstein) Rothschild. In 1937, they bought and moved to the
Château d'Abondant, a 17th century Château in north-west France they acquired from the family of American banker
Henry Herman Harjes (who had acquired the château in 1920 from the
Duchesse de Vallombrosa). Together, they were the parents of: • Baron Patrick de Koenigswarter (1936–2017), a businessman and photographer who married socialite Eva Abesamis and lived in the
Philippines, where he became a friend and collector of
Benedicto Cabrera. • Janka de Koenigswarter (b. 1938), who became the mother of Steven de Koenigswarter. • Berit de Koenigswarter (b. 1946) On 15 March 1956, Baron de Koenigswarter was married to Madeleine Adrienne Emma
Le Forestier in New York City. His second wife died in 1988. Baron de Koenigswarter died on 15 February 1995 in
Málaga,
Spain. ==References==