George III
From Tardis Wiki, the free Doctor Who reference
George III was the King of the United Kingdom from 1760 to 1820. There were rumours that he received the last mammoth in Europe as a gift from Catherine II of Russia. In 1782, during a night of drinking with the Eighth Doctor, Scarlette claimed that she had once ridden George III's mammoth. (PROSE: The Adventuress of Henrietta Street)