It was in Laugharne in 1403 that Owain Glyndŵr's rebellion stalled. Perhaps lulled into complacency, he was tricked by an ambush and lost 700 men. When a local soothsayer then warned him to leave the area or be captured, he retreated. After this the rebellion petered out under the weight of greater English numbers; and by 1415, Owain Glyndŵr had disappeared, fading into myth. In 1584, Queen Elizabeth granted Laugharne to Sir John Perrott (rumoured to have been an illegitimate son of Henry VIII) who was responsible for converting the castle from a fortification into a Tudor mansion.