- Born on April 17, 1896 in Vienna
- Deceased on May 27, 1970, at the age of 74 years
Parents
- Hubert Karl de La Fontaine und d'Harnoncourt-Unverzagt (1850 - 1920)
- Juliana Mittrowsky von Mitrowitz (1871 - 1936)
Family
- Married in 1922, with Anne-Mariz Konradsheim ( - 1926), issuing
- Private
- Married on December 29, 1928 in Graz, with Ladislaja von Meran (1899 - 1997), issuing
- Nikolaus (1929 - 2016)
- Private
Private- Private
- Private