After these troops, under the command of Gruffudd Llwyd, moved to Chester, they were dismissed on 4 August 1316 to return to North Wales in order to protect the area from the Irish threat. Goronwy and his troops were again summoned into the King's service to retake Berwick in 1319, after Scottish forces had taken it a year earlier. The majority of the forces from Wales came from the southern Marcher Lords, but Goronwy, Gruffudd Llwyd and Hywel ap Gruffudd ap Geruath led those from the northern part of the country. Around the same time, as a yeoman of the king, Goronwy was made forester of Snowdon. He remained loyal to Edward II, but following the king's death, he resumed service to Edward III. Goronwy married Gwerful fil Madog, daughter of Madog ap Iorwerth, Baron Hendwr. Goronwy and Gwerful had three sons, Hywel ap Goronwy, Tudur ap Goronwy and Gruffydd ap Goronwy. Goronwy was interred after his death in the west wall of the Franciscan Llanfaes Friary near Bangor, Gwynedd on 11 December 1331. His father had overseen the reconstruction efforts of the friary, and in 1311 was the first of the family to be placed there following his death. Other members of the family were placed there following death, until some were moved following the Dissolution of the Monasteries under the Church of England imposed by King Henry VIII of England, with Goronwy's being moved to St Gredifael's Church, Penmynydd. Goronwy's eldest son Hywel ap Goronwy joined the priesthood, and became a canon of Bangor Cathedral. In 1357, Hywel became the Archdeacon of Anglesey. Gruffydd drowned in 1344. Goronwy ap Tudur Hen was one of the direct ancestors of the Royal House of Tudor. His son Tudur ap Goronwy became a knight in the service of Edward III, and was the grandfather of Owain ap Maredudd ap Tudur (through his son Maredudd ap Tudur, grandson to Goronwy ap Tudur Hen). Owain Anglicised his name, becoming Owen Tudor, and was himself the grandfather of King Henry VII of England, the founder of the House of Tudor.