"WONASTOW, a parish in the hundred of Lower Skenfreth, county Monmouth, 2 miles S.W. of Monmouth. The village is situated on the road to Abergavenny and on the river Trothy. The principal residence is Wonastow Court, built for the Herberts in the time of Henry VI., but now the seat of Sir W. Pilkington, Bart. The living is a vicarage in the diocese of Llandaff, value £100. The church is dedicated to St. Wormow or to St. John the Baptist." [Description(s) from The National Gazetteer of Great Britain and Ireland (1868)
Allen, Richard 'To my maid servant Florence one cow called Dawny'. The will of the Quaker Charles Jenkins of Wonastow (Llanwarw) parish, 2 January 1681/2 Gwent Local History 83 1997 Welsh Journals Online
Church and chapel data from The Religious census of 1851 : A Calendar of the returns relating to Wales, Vol 1, South Wales. Ed. by I.G Jones, & D. Williams. UWP, Cardiff, 1976. The names given towards the end of each entry are those of the informants. Check with Gwent RO to see what extant records are held, and possible names of chapels/churches built after 1851.
Wonastow Parish; Statistics; Area 1599 acres; Population 79 males, 62 females, total 141
Wonastow Parish Church Attendance - morning 50, afternoon 80 2 services in English "The School and Sunday School are in the neighbour parish of Dingestow......" Robert Jackson, Rector
Family Search have an interactive map called "England and Wales Jurisdictions 1851" showing parish (and other) boundaries with optional background maps such as Ordnance Survey. There is also a Search facility, do read the guidance notes to get maximum benefit from this useful resource. See here for further background information to assist in the interpretation of this data
Kain, R.J.P., Oliver, R.R., Historic Parishes of England and Wales: an Electronic Map of Boundaries before 1850 with a Gazetteer and Metadata [computer file]. Colchester, Essex: History Data Service, UK Data Archive [distributor], 17 May 2001. SN: 4348. Here is a gazetteer/finding aid plus a set of overview maps to accurately identify the position of parishes within the county.
You can see maps centred on OS grid reference SO485107 (Lat/Lon: 51.792569, -2.748115), Llanwarw / Wonastow which are provided by: