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de Barri, G. (1194) Descriptio Cambriae "The Description of Wales" Edited by Dent, J.M. (1912) [online]

Where given, page numbers refer to: Gerald of Wales and O'Meara, J.J.(ed)(1982) The Journey through Wales and Description of Wales Penguin Classics, pp.136.

Note: this author was known by the name Giraldus Cambrensis ("Gerald of Wales").