Ernest Augustus was the fifth son of King George III (see lot 154) and Queen Charlotte (see lot 155). Since the reign of King George I, Hanover and the United Kingdom had been governed by a single monarch. However, Salic Law prevented Queen Victoria, as a woman, from ruling Hanover. On her accession to the British throne in 1837, the Hanoverian throne passed to her uncle, Ernest Augustus (the sitter in one of these two miniatures). He was succeeded by his only son, George (later George V of Hanover), the other sitter.
Both miniatures are after works by Alexander Schäfer, examples of which are in the British Royal Collection (RCINS 420761 and 420756 respectively, see V. Remington, Victorian Miniatures in the Collection of Her MajestyThe Queen, London, 2010, II, pp. 436-437).