In 1887, John Bartholomew's Gazetteer of the British Isles described Castellan like this:
Castellan, township, Penrith par., NE. Pembrokeshire, 8 miles SE. of Newport, 899 ac., pop. 172.
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 Castellan has changed, please see our redistricted information for the modern district of Pembrokeshire. More detailed statistical data are available under Units and statistics, which includes both administrative units covering Castellan and units named after it.
GB Historical GIS / University of Portsmouth, History of Castellan in Pembrokeshire | Map and description, A Vision of Britain through Time.
Date accessed: 22nd May 2013
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