Originally Posted by carlota
in fact no. as other grandchildren of jean and josephine charlotte were given the title of prince/princess of nassau and luxembourg, the children of helene and jean were given the titles of count/countess of luxembourg, and not nassau.
The wife and children of Prince Jean were given the titles Count/ess of Nassau (not Luxembourg) several years into their marriage. After Prince Jean and Countess Helene divorced all of their children were upgraded to HRH Prince/ss of Nassau.