Career
Between 1391 and 1403 he held various positions within the dioceses of Saint Davids and Bangor, Gwynedd at Llanynys between Denbigh and Ruthin and Llanbadarn Fawr and then prebends at Garthbrengy near Brecon, Boughrood near Hay-on-Wye, Lampeter and Bangor itself. He rose to be vicar-general at Saint Davids and then Archdeacon of Merioneth. He was closely involved in Owain"s strategy and formulated the Pennal Policy in which Owain stated that he would transfer the allegiance of the Welsh church away from Rome to Pope Benedict XIII in Avignon.
By 1408 as the rebellion was experiencing setbacks he made his own future plans.
Outside events were leading towards the Council of Constance which soon brought the schism of two competing Popes to an end with the election of Pope Martin V. The Pennal Policy was to become redundant. Young instead was appointed as Bishop of Ross in the Kingdom of Scotland, by Pope Martin V, but he was never really in firm control of his diocese and was transferred to become titular Bishop of Hippo in North Africa along with two livings in Rheims and Tours in France.
He was appointed abbot of the abbey of Le Thoronet, in the south of France, by Pope Martin V in 1430. He was still referring to himself as Bishop of Ross in 1430 and certainly lived beyond 1432.
His exact end is not known.