Raglan castle in Monmouthshire, south-east Wales, was one of the last medieval castles to be built in the British Isles. Construction first began about the middle of the 15th century and was commissioned by one William Thomas, who was described as the ‘lesser son of a minor family’. He was, however, active in local politics and very attentive to the noble young ladies of the day, eventually marrying two wealthy heiresses in quick succession,...