"MYNYDDYSLWYN, a parish in the lower division of the hundred of Wentllooge, county Monmouth, 8½ miles N.W. of Newport, its post town, and 7 S.W. of Pontypool. The parish, which is extensive, contains the hamlets of Mynyddmaen, Clawrplwyf, and Penmaen. The inhabitants are employed in the numerous collieries, ironworks, stone quarries, and in cotton-weaving. The village is considerable. It is a meet for the Tyisha harriers."
[Description(s) from The National Gazetteer of Great Britain and Ireland (1868)
Burland, Len. A Historical Tour around Mynyddislwyn Mountain. 2002. 373p.
Burland, Len & Foster Frowen & Lionel Milsom Abercarn Blast Furnace Gwent Local History 82 1997 Welsh Journals Online
Collins, Brian & Terry Powell. Crumlin to Pontymister, in Old Photographs Vol 1 1980. All these books by Brian Collins contain historical information about Crumlin and neighbouring villages, (Newbridge, Abercarn, Cwmcarn, Pontywaun, Crosskeys, Risca and Pontymister)
Collins, Brian & Terry Powell. Crumlin to Pontymister, in Old Photographs Vol 2 1982
Collins, Brian. Crumlin to Pontymister, Then and Now 2003
Collins, Brian. Crumlin to Pontymister, Places of Worship 2005
Collins, Brian. Crumlin to Pontymister, Over the Years 2007
Elliot, John The Crumlin Viaduct Works 1853-1878: from world leader to Welsh tragedy Gwent Local History vol 80 1996 Welsh Journals Online
Gray, Madeleine. Henry, Earl of Pembroke's survey of the manor of Mynyddislwyn in 1570. National Library of Wales Journal 30 (1997), p. 171-96.
Horton, E H Dr Mr William Humphreys, Engineman [Abercarn Colliery] Gwent Local History vol 61 1986 Welsh Journals Online
Jones, R T. From ox team to tractor : the history of the Mynyddislwyn Agricultural Society 1870-1972. Pontypool : [s.n.], 1972. 59p .
Portrait of a parish : Mynyddislwyn. Gwent Family History Society Journal. No. 71 (Sept. 2003), p. 15-18 .
The Urban District of Mynyddislwyn official guide. Gloucester : British Publishing Co., 1974.
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.
Mynyddislwyn Parish consisting of the hamlets of Clawrplwyf, Mynyddmaen and Penmain; Statistics; Area 15938 acres; Population 3157 males, 2837 females, total 5994
Mynyddislwyn Parish Church Attendance - morning 25 + 17 scholars, afternoon 30 + 20 scholars 1 service in Welsh Informant; David Jones, Registrar
New Bethel, Mynyddislwyn Independents Erected 1765 Attendance - morning 294, afternoon 157 scholars, evening 205 "....in 1849 a large school room was built in connection with the said chapel where day school is kept, and £100 debt remains" Moses Ellis, Minister
Babell Welsh Calvinistic Methodist, Mynyddislwyn Erected 1827 Attendance - morning 45 + 20 scholars, afternoon 64 scholars, evening 50 + 40 scholars "Several of the congregation were confined at home this Sunday by sickness" Morgan Thomas, Elder, Ynysddu
Capel y Garn, Abercarn, Independents Erected 1847 Attendance - morning 72, afternoon 39 scholars, evening 113 "The Congregation being a branch of Bethel, Mynyddislwyn....." Benjamin Mathews, Deacon, Abercarn
Cymreigyddion Hall, Abergwyddon, Particular Baptists "In February last the Room was fitted up for use of the Particular Baptists. It is regularly used as a Day School and for the general purpose of Public Meeting" Attendance - morning 200 + 266 scholars, evening 226 David ap Rhys Stephens, Minister of Abergwyddon
Reading Room, Abercarne, Wesleyan Methodist Erected before 1800 Attendance - morning 23 + 21 scholars, afternoon 30 scholars, evening 45 "The room which we hold meetings in of Sundays is made use of in the week days for school. We only use it on Sundays." George Hawkins, Class Leader, No 133 Abercarne
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 ST193938 (Lat/Lon: 51.637150, -3.167536), Mynyddislwyn which are provided by: