TFPL, Feb 2002: Faris' Plantagenet Ancestry, 2nd Edn p. 383, has a Gerard Braybrooke of Colmworth, Beds and Horsended, Bucks, as the father of Reynold Braybrooke who married Joan de la Pole.  This Gerard's wife was Margaret dau. of John de Longueville of Orton Longueville, Hunts.  I wonder if this is the same person as this Gerard Braybrooke.  If so, then his daughter Nicola was not heir...