Mathrafal near Welshpool, in Powys, Mid Wales, was the seat of the Kings and Princes of Powys probably from the 9th century until its destruction in 1212 by Llywelyn ap Iorwerth of Gwynedd. Location Mathrafal's located about six miles northwest of Welshpool at the junction of the A495 and B4389 on the banks of the River Banwy. Description The site known today as "Mathrafal Castle"'s a roughly 100 m square rectangular compound defended by ditches. Little remains of the original walls. Little… (More on Mathrafal)