[1] In that role, Goronwy had followed in the footsteps of his father, Ednyfed Fychan, and by doing so had tied the fortunes of the early House of Tudor to those of Llywelyn.
[2] Goronwy led Llywelyn's military forces, and in February 1263 he took them as far south as Gwent in action against the Marcher Lords.
[5] Tudur and his brother Goronwy were two of those lords who backed the rebellion of Madog ap Llywelyn against the English in 1294–95.
[3] Tudur and Goronwy were two of three men who witnessed the Madog's charter, known as the Penmachno Document, in 1294 which granted lands in Ardudwy and Llansannan to Bleddyn Fychan.
[8] Tudur Hen has since the 18th century been historically credited with the construction of the Franciscan Llanfaes Friary near Bangor, but it actually pre-dated him.
[8] Tudur used the English property laws, which he found more advantageous in his position than those used by the Welsh, as they allowed for inheritance of lands by a single party.