Prince Wenzeslaus von und zu Liechtenstein's brothers made the following marriages:
Prince Alexander Wilhelm Hans Adam of Liechtenstein (born on 19 May 1972 in Basel, Canton of Basel-Stadt, Switzerland). Married civilly in Vaduz on 24 January 2003 and religiously in Salzburg on 8 February 2003 to Astrid Barbara Kohl (born on 13 September 1968 in Regensburg, Germany), daughter of Theodor Kohl and wife Ingrid Schlechta.
Prince Rudolf Ferdinand of Liechtenstein (born on 7 September 1975 in Uccle, Brussels, Belgium). Married in Istanbul on 20 April 2012 to İlhan Tılsım Tanberk, a Turkish businesswoman and heiress of the Sinter Metal company. She was born on 20 July 1974 in Istanbul, Turkey as a daughter of Olgun Tanberk and wife Melek Kampulat.