Prince Stefan was born in Klagenfurt, Austria, and grew up on the family estate in Rosegg, a Carinthian town close to the Slovenian border.

[1] Prince Stefan entered a dynastic marriage with Countess Florentine of Thun and Hohenstein in Vienna on 18 June 1988.

[2] Having attended school in Carinthia, Prince Stefan studied business administration at the University of Innsbruck.

From 1995 until 2001, Prince Stefan and his younger brother Emanuel ran a tourism project on the family estate in Rosegg.

Prince Stefan defended his country's policy, saying: "One can't always assume that every customer who comes through the door is a criminal.