[3] However, due to his mother's numerous love affairs, George's true paternity is a matter of debate.
[5] On 17 May 1809, he married Caroline Rosalie Adelaide St. Jules, the illegitimate daughter of William Cavendish, 5th Duke of Devonshire, by his mistress (and eventual second wife) Lady Elizabeth Foster.
[6][7] George would neglect Caroline St. Jules by retiring to bed early to avoid sleeping with his wife.
Lady Elizabeth Foster could not see Caroline St. Jules’ and George Lamb's marital problems in any positive light.
Lady Elizabeth Foster was disappointed in George's treatment of Caroline and believed him to be "some kind of monster.