Hywel MacGregor-Glyndwr, son of Hywel III and Henrietta was born in the Palace of Harlech on the 28th February 1670. He was born late in his fathers life, during the period of rule by Parliament and the Chancellor, Llewellyn Preece. He was brought up mainly in Caernarfon Castle by his tutor, Henri Dupont, a Walloon from the Spanish Netherlands. Hywel was therefore fluent in French, English, Latin, Spanish as well as his native Welsh, and was considered to be one of the most educated Kings to sit on the Welsh throne.