In 1900, Archduke Franz Ferdinand of Austria (then heir presumptive to the Austro-Hungarian throne) contracted a morganatic marriage with Countess Sophie Chotek. Their descendants, known as the House of Hohenberg, have been excluded from succession to the Austro-Hungarian crown, but not that of Lorraine, where morganatic marriage has never been outlawed. Nevertheless, Otto von Habsburg, the eldest grandson of Franz Ferdinand's younger brother, was universally regarded as the head of the house until his death in 2011. It was at Nancy, the former capital of the House of Vaudemont, that the former crown prince married Princess Regina of Saxe-Meiningen in 1951.