Elsynge was the eldest son of
Henry Elsynge and his wife Blanche Hyett; and was baptised at
St Dunstan-in-the-West on 2 March 1606. He was educated at
Westminster School under L. Osbeldiston. Elsynge entered
Christ Church, Oxford, as a commoner, in 1621, proceeding B.A. 1625. After he spent seven years in foreign travel, Archbishop
William Laud procured him the appointment of
clerk of the House of Commons. His work was significant during the
Long Parliament. In December 1648, Elsynge resigned his appointment on a pretext, to avoid taking part in the proceedings against
Charles I. He retired to
Hounslow in
Middlesex, where he died. He was buried in
St. Margaret's, Westminster, on 30 September 1656. ==Works==