Tywysogion Gwynedd =
Subtitle: Princes of Gwynedd.
Publisher: Adran Datblygu Economaidd a Chynllunio Cyngor Sir Gwynedd = Gwynedd County CouncilEconomic Development and Planning
Published: 1994
Place of publication: Caernarfon
Language: wel
Other titles: Princes of Gwynedd.