Prince Albert Casimir of Saxony, Duke of Teschen (11 July 1738, Moritzburg, Electorate of Saxony – 10 February 1822, Vienna) was a Saxon prince from the House of Wettin who married into the Habsburg imperial family. He was noted as an art collector and founded the Albertina in Vienna, one of the largest and finest collections of old master prints and drawings in the world. Biography He was a younger son of King Augustus III of Poland (who was also Elector of Saxony) and Maria Josepha of Austria, a first cousin of Empress Maria Theresa, being the eldest daughter of Emperor Joseph I. Prince Albert of Saxony, Duke of Teschen, was also one of the godparents to his namesake, Prince Albert of Saxe-Coburg and Gotha. Young Albert was specifically chosen by Archduchess Maria Christina of Austria to be her husband. This was a special favour granted by her mother, Empress Maria Theresa of Austria, because marriages of imperial children were usually used for diplomatic purposes. Still, the betrothal and wedding had to wait until the death of her father, Emperor Francis I, and the wedding decorations were black because it occurred during the official mourning period after his death. From his father-in-law's estate, Albert received the territory of Teschen in Austrian Silesia and was accordingly given the title of Duke of Teschen. Since he became a member of the Habsburg-Lorraine family, the title of Archduke was also given to him. The Silesian Duchy of Teschen had been inherited by Emperor Francis through his father's Gonzaga ancestry, as compensation for the lost Duchy of Montferrat, taken from them in favor of the dukes of Savoy. Archduchess Maria Christina, the daughter of Francis of Lorraine, received the duchy among her dowry. Prince Albert of Saxony thus became the Duke of Teschen, the only non-Habsburg to become such after the title passed into Habsburg control. Their marriage remained childless except for a daughter that died as a baby, and upon the death of the widowed Albert in 1822, Teschen was granted to their adopted son, Archduke Charles of Austria, who became Duke of Teschen and started the Habsburg-Lorraine branch of Dukes of Teschen. Albert was royal governor of Hungary from 1765 to 1781, with his seat at Bratislava Castle and his summer residence in Halbturn Castle at Neusiedl. He was then made Governor of the Austrian Netherlands, along with his wife. In Brussels,