How long was the reign of the king whose court Paon de Roet became attached to?
Paon de Roet:  He became attached to the court of King Edward III of England through the king's marriage to Philippa of Hainaut. Edward III of England:  His long reign of 50 years was the second longest in medieval England and saw vital developments in legislation and government—in particular the evolution of the English parliament—as well as the ravages of the Black Death.
50 years