Sir Robert Jermyn DL (1539–1614) was a prominent East Anglian landowner and magistrate, of strongly reformist views in religion, who sat in the House of Commons at various times between 1584 and 1589. Jermyn was the eldest surviving son of Sir Ambrose Jermyn and his first wife Anne Heveningham, daughter of George Heveningham. He may have been a student of Corpus Christi College, Cambridge in 1550. He was admitted to the Middle Temple in 1561. In 1577 he succeeded to his father's Suffolk estates and seat at Rushbrooke Hall, Suffolk's largest moated Tudor mansion. Around this time he was brought onto the commission of the peace. He was knighted by Queen Elizabeth I in 1578 and hosted the Queen at Rushbrooke during her visit to Suffolk the same year. He was appointed High Sheriff of Suffolk f