"Seiliwyd ar y gyfres 'Tywysogion', Cynhyrchiad Ffilmiau'r Bont i S4C = Based on the series 'Tywysogion', Ffilmiau'r Bont Production for S4C".
Teitl o'r clawr = Title from cover.
Tywysogion by Huw Pryce. ISBN 9780852843260. Published by Hughes a'i Fab/S4C in 2006. Publication and catalogue information, links to buy online and reader comments.