Trahaearn ap Gwilym ap Hywel Grach ap Gwilym of Crai

Parents

• Gwilym ap Hywel Grach ap Gwilym ap Hywel
• Elsbeth Walbyf

Children

Siblings

• Ieuan ap Gwilym ap Hywel Grach ap Gwilym of Abercrai
• Gwenllian ferch Gwilym ap Hywel Grach ap Gwilym ap Hywel
• Rhys ap Gwilym ap Hywel Grach ap Gwilym