Gwilym ap Hywel Grach ap Gwilym ap Hywel (1325 - 1361) (1325–1361) Parents Hywel Grach ap Gwilym ap Hywel ap Gwgon Fychan Children Rhys ap Gwilym ap Hywel Grach ap Gwilym Ieuan ap Gwilym ap Hywel Grach ap Gwilym of Abercrai Trahaearn ap Gwilym ap Hywel Grach ap Gwilym of Crai Gwenllian ferch Gwilym ap Hywel Grach ap Gwilym ap Hywel