Mary Percy, Countess of Northumberland

Mary Percy, Countess of Northumberland (née Lady Mary Talbot; died 16 April 1572) was a courtier and noblewoman during the reign of Henry VIII of England. She was the daughter of George Talbot, 4th Earl of Shrewsbury. Her husband, Henry Percy, 6th Earl of Northumberland, had wished to marry Anne Boleyn instead of her.