Gabriel married firstly to Princess Malgorzata Izabella Czartoryska, daughter of Prince Adam Ludwik Czartoryski and his wife Countess Maria Ludwika Krasińska, on 25 August 1927 in Paris [REF].
Gabriel married, secondly, Princess Cecylia Lubomirska, daughter of Prince Kasimierz Lubomirski and his wife Countess Maria Theresia of Granow-Wodicka, on 15 September 1932 in Kraków [REF].