All data has been derived from the transcriptions in the IGI derived from the official 1911 transcription - thus it is a transcription of a transcription of an earlier transcription !
Based on various Church, Civil and, post 1821, Decennial Census data
The dip in 1831 is exactly compensated by a peak in the figure for Lezayre - it would appear that the census enumerators may have mistaken parish boundaries.
The register starts from 1646 -
TBD - IGI batch numbers removed from pre 1800 marriages (see Andreas for details)
R.A. Houston The Population History of Britain and Ireland 1500-1750, Macmillan Education Studies in Economic and Social History (ISBN 0-333-56564-9) 1992