Bowyer was the second son of William Bowyer, Keeper of the Records in the Tower of London and his wife Agnes, daughter of Sir John Harcourt of Oxfordshire and Staffordshire, the widow of John Knyvet of Ashwellthorpe, Norfolk. Robert had an elder brother William, a sister Judith, and an older half-brother Henry Knyvett. His father died in 1569 or early 1570, and young Robert was placed with his uncle, Francis Bowyer, a wealthy alderman of London. He received his BA from Oxford in 1579 and continued his studies briefly at Clifford's Inn before entering the Middle Temple in 1580. Bowyer attached himself to Thomas Sackville, Lord Buckhurst. In 1594 and 1597 he pursued the position of Clerk of the Parliaments, without success. The role went to Thomas Smith, clerk of the Privy Council, who had written to the Queen's Secretary Robert Cecil "I think there is or will be one Bowyer, a suitor for the place by means of my Lord of Buckhurst, who may be well worthy, perhaps, of some other and greater preferment, but I may be bold to say, that he is not fit for this place, by reason of a great imperfection he hath in his speech." The role went to Smith, and Bowyer was given the reversion of the position. In 1599 Buckhurst succeeded William Cecil as Lord Treasurer, and by that time Bowyer was in service as Buckhurst's secretary, a position he probably held until the Lord Treasurer's death in 1608. Under the Lord Treasurer's patronage Bowyer was elected Member of Parliament for Steyning in 1601. Near the end of his first term, it was recorded that he "swooned upon a sudden, and was again recovered within a quarter of an hour. It was said he had a spice of the falling sickness". In 1604, he was appointed to his father's old position of Keeper of the Records in the Tower of London, jointly with his nephew-by-marriage Henry Elsynge. On 31 October 1605 he was elected MP for Evesham in a by-election. "s befitted his experience and office, Bowyer was often appointed to committees to search for precedents and to provide the House with official records." During this term he kept a diary of parliament and political activities, which has survived. Like his father before him, Robert Bowyer was a collector of old manuscripts. He owned the Lindisfarne Gospels, which bear his signature on folio 2v ; their earlier provenance is obscure. Thomas Smith died in December 1609, and Bowyer was sworn Clerk of the Parliaments on 30 January 1610, resigning his seat in Commons. He soon brought Elsynge on to assist him in the Lords. He and Elsynge continued to serve as joint Keepers of the Records in the Tower until 1612. Bowyer spent the remainder of his years organising and preserving the Parliamentary records which he had found in a sadly neglected state. Bowyer died 15 March 1621 and was buried at St Dunstan-in-the-West on 16 March. He died unmarried, leaving his books and papers to Henry Elsynge who succeeded him as Clerk of the Parliaments. His will was proved 22 November 1622.
Works
Bowyer's diary of his years in the Commons was published as The Parliamentary Diary of Robert Bowyer, 1606–1607, edited by David Harris Willson, University of Minnesota Press, 1931. It was reprinted by Ogden Press in 1971. Bowyer and Elsynge's official notes as Clerks of the Parliaments were published as Notes of the Debates in the House of Lords Officially Taken by Robert Bowyer and Henry Elsing 1621, 1625, 1628, edited by Frances Helen Relf, Royal Historical Society, London, 1929.