Helena Dragaš was the empress consort of the last reigning emperor of what empire?
Helena Dragaš Helena Dragaš (Serbian: Јелена Драгаш, "Jelena Dragaš" , Greek: , "Elenē Dragasē"; c. 1372 – 23 March 1450) was the empress consort of Byzantine emperor Manuel II Palaiologos and mother of the last two emperors, John VIII Palaiologos and Constantine XI Palaiologos. Later in life she became a nun. She is venerated as a saint by the Eastern Orthodox Church under her monastic name, as Saint (Ὑπομονὴ ), translated in English as "Saint Patience".
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.