So when Llywelyn ap Iorwerth decided to summon all the Welsh princes to swear allegiance to his son Dafydd in 1238, he didn’t have to think long about a suitable venue.
Felly pan benderfynodd Llywelyn ap Iorwerth alw holl dywysogion Cymru i dalu llw teyrngarwch i’w fab Dafydd ym 1238, ni fu’n rhaid iddo feddwl yn hir am leoliad addas.