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5/13/1250 at Mortlake, Peter de Monte Forti witnessed a charter of Edward, the king’s eldest son. (S) Calendar of Charter Rolls.
1263, Letters from Peter de Montfort, in command at Abergavenny, to the king reveal the English were desperate. Peter said that if he received no assistance, he would be forced to abandon his command. (S) Edward I, Prestwich, P38.