Henrietta Howard, Countess of Suffolk
Henrietta Howard was a British courtier. She is known as the mistress of King George II of Great Britain. She was the sister of John Hobart, 1st Earl of Buckinghamshire.
Henrietta Howard, Countess of Suffolk, c. 1724, by Charles Jervas.
Marble Hill House, North (town) front, with pilasters
A mistress is a woman who is in a relatively long-term sexual and romantic relationship with someone who is married to a different person.
Madame de Pompadour, mistress of Louis XV of France, c. 1756
Eugène Delacroix's c. 1825 painting Louis d'Orléans Showing His Mistress
Domitila de Castro, long-term mistress of Emperor Pedro I of Brazil