==References==* Remfry, P.M., "Hay on Wye Castle, 1066 to 1298" (ISBN 1-899376-07-0)* Robin Saikia, Blue Guide Hay-on-Wye (Blue Guides, 2010)==External links==* Official website* Hay Festival* Hay Fringe Festival* Anglo-Norman Castles* Richard Booth's "Hay Peerage"* Local tourism website* Old photographs and history* Hay on Wye book festival guide* Community Website for development alternatives in Hay
* Remfry, P.M., "Hay on Wye Castle, 1066 to 1298" (ISBN 1-899376-07-0)* Remfry, P.M., "Hay on Wye Castle, 1066 to 1298" (ISBN 1-899376-07-0)* Official website* The Guardian Hay Festival* Hay Fringe Festival* Anglo-Norman Castles* Richard Booth’s «Hay Peerage»* Local Tourism Website* Old photographs and History of Hay