Maximilian Hugo, Hereditary Prince of Windisch-Graetz (born 1990); eldest child of Mariano Hugo, Prince of Windisch-Graetz, and Sophie Habsburg (b. 1990) Parents Archduchess Sophie, Princess of Windisch-Graetz Prince Mariano Hugo, 6th Prince of Windisch-Graetz Children Siblings Princess Larissa Maria of Windisch-Graetz Alexis Ferdinando zu Windisch-Graetz