What is XXX's spouse's name?
Wilhelmine Amalia of Brunswick-Lüneburg
Wilhelmine Amalia of Brunswick-Lüneburg (21 April 1673 -- 10 April 1742) was Holy Roman Empress, Queen of the Germans, Queen of Hungary, Queen of Bohemia, Archduchess consort of Austria etc. as the spouse of Joseph I, Holy Roman Emperor.
Joseph I, Holy Roman Emperor