Gruffudd Fychan I

He paid homage to Edward Longshanks for the Lordship of Yale, and fought the War of 1282–1283.

On his father's death in 1269 (or 1270) his share was the Lordship of Iâl (Yale) and Edeirnion, which included Glyn Dyfrdwy.

In the peace treaty, it was agreed that he would not do homage to Llywelyn for Edeirnion, but to Edward Longshanks to keep the commote of Iâl (Yale).

[2][3] He again fought alongside Llywelyn during the War of 1282–1283, and lost his lands to the English following his defeat.

[5] Madog was put in the wardship of John de Warenne, 6th Earl of Surrey, who later started the construction of Holt Castle in the lordship, and commanded the Battle of Stirling Bridge against Sir William Wallace during the English invasion of Scotland.