Christopher Merret FRS (16 February 1614/5 – 19 August 1695), also spelt Merrett, was an English physician and scientist. He was the first to document the deliberate addition of sugar for the production of sparkling wine, and produced the first lists of British birds and butterflies.Merret was born in Winchcombe, Gloucestershire on 16 February; Hunter gives the year of his birth as 1615, which may be 1614 Old Style. In 1632 he went up to Gloucester Hall, Oxford (which later became Worcester College); he received his BA from Oriel in 1635, and his BMed and DMed from Gloucester Hall in 1636 and 1643 respectively Less