William Knollys was an English courtier and politician during the late 16th and early 17th centuries. He was born around 1544 and served as a Member of Parliament for various constituencies. Knollys was known for his loyalty to the Tudor monarchy, particularly during the reign of Queen Elizabeth I. In addition to his political career, Knollys held several important positions, including that of a privy councillor. He was also involved in military affairs, serving as a captain in the English army. His contributions to the court and his service to the crown made him a notable figure of his time.