Jenett was the only legitimate daughter of Thomas Mathew, lord of Radyr in Glamorgan de jure uxoris, who was married to Katherine, daughter of Morgan ap Llewelyn, lord of Radyr, a descendant of Iestyn ap Gwrgant, last ruler of the royal house of Morgannwg and a descendant of Saint Tewdrig himself.
She was a granddaughter of Sir Dafydd ap Mathew, lord of Llandaff and seneschal of the cathedral there, said to be the standard bearer to Edward IV at the battle of Towton (1461), by his wife Gwenllian, daughter of Sir Dafydd ap Gwilym of Y Cappel in Monmouthshire [brother of Tomas ap Gwilym of Llansantffraed].
Jenett was descended through a direct male line from Aeddan ap Gwaithfoed, who took the Crusader's Cross from Archbishop Baldwin in 1188.
Jenett was the only legitimate daughter of Thomas Mathew, lord of Radyr in Glamorgan de jure uxoris, who was married to Katherine, daughter of Morgan ap Llewelyn, lord of Radyr, a descendant of Iestyn ap Gwrgant, last ruler of the royal house of Morgannwg and a descendant of Saint Tewdrig himself.
She was a granddaughter of Sir Dafydd ap Mathew, lord of Llandaff and seneschal of the cathedral there, said to be the standard bearer to Edward IV at the battle of Towton (1461), by his wife Gwenllian, daughter of Sir Dafydd ap Gwilym of Y Cappel in Monmouthshire [brother of Tomas ap Gwilym of Llansantffraed].
Jenett was descended through a direct male line from Aeddan ap Gwaithfoed, who took the Crusader's Cross from Archbishop Baldwin in 1188.