Maria Theresa and the Hungarian Parliament - after the picture by Laslett J. Pott. Austrian; Bohemian and Hungarian sovereign: 13 May 1717 ? 29 November 1780. Holding son (Joseph II) having fled to Hungary following the invasion of Austria during the War of the Austrian Succession. Taken from Cassell's History of England vol. iv; published by Cassell & Co Ltd; p.77.