In 1870-72, John Marius Wilson's Imperial Gazetteer of England and Wales described Caron Uwch Clawdd like this:
CARON-UWCH-CLAWDD, or Strata-florida, a township-chapelry in Caron-ys-Clawdd parish, Cardigan; on the Sarn Helen way and the river Teifi, 4 miles NNE of Tregaron r. station, and 22½ N by W of Llandovery. It includes the village of Rhydfendigaed; and its Post Town is Tregaron, under Carmarthen. Rated property, £368. Pop., 868. Houses, 181. The property is divided among a few. The surface consists of mountains, intersected by narrow vales. A Cistertian Abbey, often called Ystrad-Flwr Abbey, was founded here, in 1164, by Rhys-ap-Gryfydd, prince of South Wales; burnt down in the wars of Edward I.; restored afterwards to more than its original splendour; and given, at the dissolution, to the Stedmans. ...
It was the repository of the national records from 1156 till 1270, and the scene of a grand assembly of lords and barons in 1238; and was the burialplace of many of the Cambrian princes. It stood on the Teifi, overshadowed by mountains; and was alike secluded and magnificent; but almost the only part of it now remaining is a very beautiful Norman arch, which formed the west entrance to its church. An older but small monastic house stood two miles to the south, at a spot still showing ancient foundations, and called LlanMonachlog, "the old monastery." The living is a vicarage in the diocese of St. Davids. Value, £80. Patron, W. E. Powell, Esq. The church is a small mean structure within the precincts of the Abbey. There is a Calvinistic Methodist chapel.
A Vision of Britain through Time includes a large library of local statistics for administrative units. For the best overall sense of how the area containing Caron Uwch Clawdd has changed, please see our redistricted information for the modern district of Ceredigion. More detailed statistical data are available under Units and statistics, which includes both administrative units covering Caron Uwch Clawdd and units named after it.
GB Historical GIS / University of Portsmouth, History of Caron Uwch Clawdd, in Ceredigion and Cardiganshire | Map and description, A Vision of Britain through Time.
Date accessed: 09th March 2014
Click here for more detailed advice on finding places within A Vision of Britain through Time, and maybe some references to other places called "Caron Uwch Clawdd".