The arms are those of Henry, 10th Earl of Pembroke, born in 1734, who succeeded his father in 1750. A Colonel in the Army, he served in Germany during the Seven Years War and was present at the basttle of Warburg in 1760. From 1761 to 1763 he commanded the Cavalry Brigade in Germany, during which time, in February 1762, he "caused great scandal by throwing up his place in court and eloping in a packet-boat with Elizabeth Catherine (Kitty), daughter of Thomas Orby Hunter, then a Lord of the Admirality, 'and since that time, it is asserted, [he] had had amorous connections with several ladies of less note'" (Complete English Peerage, 1775. His illegitamate son by Kitty Hunter was educated at Eton, 1767-1771, under the name of Augustus Retnuh Reebkomp, the latter being an anogram of Pembroke, and Retnuh his mother's name reversed.

In 1761, he published the celebrated Method of Breaking Horses, which went through three editions. His hobby, given among those of Men of Fashion, in 1782, was the "Manege". (Complete Peerage)

He had married in 1756 Elizabeth, 2nd daughter of the 3rd Duke of Marlborough. She was the lady whom George III, when insane, imagined that he had married and whose health he used to drink as "dilectissime Elizabetha". In 1804 Lady Bessborough wrote that "Lady of Pembroke says the King persecutes her with love letters, and that she has been oblig'd to write very seriously to him to desist... but certainly, in favour of his taste, she is the handsomest woman of 70 I ever saw." (Complete Peerage).
Lord Pembroke had died in 1794 and Lady Pembroke died in 1831.