Who married Princess Sophie of Hohenberg?

Princess Sophie of Hohenberg (Sophie Marie Franziska Antonia Ignatia Alberta von Hohenberg; (1901-07-24)24 July 1901 – (1990-10-27)27 October 1990) was the only daughter of Archduke Franz Ferdinand of Austria and his wife Sophie, Duchess of Hohenberg, both of whom were assassinated in Sarajevo on 28 June 1914. This assassination triggered the First World War, thus Sophie and her two brothers are sometimes described as the first orphans of the First World War.