Catherine Knollys, also known as Catherine Carey, was born around 1520 and was a prominent figure in the Tudor court of England. She was the daughter of Mary Boleyn, the sister of Anne Boleyn, making her a niece of King Henry VIII. Catherine served as a lady-in-waiting to Queen Elizabeth I and was known for her intelligence and charm. Catherine married Sir Francis Knollys, a notable courtier and soldier, and they had several children together. Her descendants included influential figures in English history, and she played a significant role in the political and social life of her time, particularly during the reign of Elizabeth I.