when did the british monarchy lose political power
Monarchy of the United Kingdom From the 1080s, the lordships of South Wales were held by a succession of Norman families inter-married with older Welsh houses loyal to the English throne, with many lordships also held by the English King in his own right. The process was completed in the 13th century when the north of Wales, as a principality, became a client state of the English kingdom, while Magna Carta began a process of reducing the English monarch's political powers.