Lady Mary Villiers was an English noblewoman born in 1600, known for her beauty and intelligence. She was the daughter of George Villiers, 1st Duke of Buckingham, a prominent courtier and favorite of King James I. Her family was influential in the early 17th century, and she was well-educated, which was uncommon for women of her time. In 1620, Lady Mary married Sir Robert Sidney, a member of the Sidney family, which was also notable in English history. The couple had several children, and Lady Mary played a significant role in managing their estate. She is remembered for her contributions to the social and political life of her era.