The story of the princes of Deheubarth – once rulers of much of south west Wales – is a fascinating mix of ambition, rivalry, castle-building and cultural awakening.
Mae hanes tywysogion Deheubarth – llywodraethwyr rhan helaeth o dde-orllewin Cymru ar un adeg – yn gymysgedd ddiddorol o uchelgais, ymgiprys, codi cestyll a deffroad diwylliannol.