Prince Stefan was born in
Klagenfurt,
Austria, and grew up on the family estate in
Rosegg, a
Carinthian town close to the
Slovenian border. His parents are
Prince Alexander of Liechtenstein and Princess Josephine of Löwenstein-Wertheim-Rosenberg. Prince Stefan and his twin brother, the physician Prince Christian, are the elder two of the couple's three sons, the third one being Prince Emanuel. Prince Stefan belongs to the most junior extant line of the
House of Liechtenstein, being descended from
Prince Johann I Joseph's son
Eduard Franz. His maternal uncle is
Alois-Konstantin, 9th Prince of Löwenstein-Wertheim-Rosenberg, and he is a fifth cousin-once removed of Liechtenstein's present sovereign,
Prince Hans-Adam II. Prince Stefan entered a
dynastic marriage with Countess Florentine of
Thun und Hohenstein in Vienna on 18 June 1988. Prince Stefan and Princess Florentine have four children: Prince Lukas (b. 1990), Prince Konrad (b. 1992, m. Catalina de Biolley), Princess Anna (b. 1994), and Princess Rita (b. 1999). == Education and career ==