"LLANTILLIO-CROSSENNY, a parish in the upper division of the hundred of Skenfreth, county Monmouth, 7 miles N.W. of Monmouth, its post town. The village, which is small, is situated on the river Trothy. The living is a vicarage* in the diocese of Llandaff, value £270, in the patronage of the dean and chapter. The church, dedicated to St. Teilaw, is a spacious structure, in the decorated style of architecture, with lofty tower. Adjoining it is a large chapel, on the N. side of the presbytery. In the churchyard is an altar-tomb to the memory of Colonel Clifford's son."
[Description(s) from The National Gazetteer of Great Britain and Ireland (1868)
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 established after 1851.
Llantillio-Crossenny Parish; Statistics; Area 5951 acres; Population 44 males, 34 females, total 78
Llantilio Crossenny Parish Church Attendance - morning 80 +30 scholars 1 service in English David Davies, Minister
Llanfair Chapel, Church of England Consecrated 1850 - an additional church in the Upper division of Llantilio Attendance - afternoon 50 1 service in English David Davies, Vicar of Llantilio, Crossenny
Rose Cottage Chapel, Primitive Methodist Erected 1842 Attendance - morning 45, evening 70 James Jones, Minister
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 SO398149 (Lat/Lon: 51.829415, -2.875008), Llandeilo Gresynni / Llantilio Crossenny which are provided by: