This is a page listing various resources dealing with Welsh history, geography and related topics and subjects. Resources range from website and online article links to lists of recommended non-fiction bibliography.
Map of Wales in ca. 1217 - Yellow: Areas directly ruled by Llywelyn; Grey: Areas ruled by Llywelyn's vassals; Green: Anglo-Norman marcher lordships in Wales.
Map of the Principality of Wales after the Statute of Rhuddlan (1284) - Green: Former principality of Gwynedd with counties created by the Statute of Ruddlan; Cyan: Counties created by the Statute of Ruddlan; Orange: Lordships of the Marcher barons.
Cronfa Ddata Enwau Lleoedd / Archif Melville Richards - Online searchable database of the place names of Wales from the University of Wales at Bangor's Place-Name Research Centre. Provides alternate historical spellings, historic references, dates, and most importantly the exact sources in which these place name references are found.
Castlewales.com - Comprehensive overview of Welsh castles.