JEAN [I] de Nesle (-2 Dec 1292). Seigneur de Falvy et de la Hérelle. "Jehans de Neele cuens de Pontieu de Monsteruel et d’Aubemarle" appointed "la noble dame Jehane…roine de Castele et de Lyon contesse de Pontieu nostre…fame" as his proxy to pursue a claim against the monks of Saint-Sauve by charter dated 17 Oct 1270[4136]. The necrology of Joyenval records the death “3 Dec“ 1281 of "domini Joannis de Nigella filii dominæ Aelidis de Roya” and his donation which was confirmed by his mother[4137]. m firstlyBEATRIX, daughter of ---. m secondly ([May 1260/9 Feb 1261]) as her second husband, JEANNE de Dammartin Ctss de Ponthieu, widow of FERNANDO III "el Santo" King of Castile, daughter of SIMON de Dammartin Comte d’Aumâle & his wife Marie Ctss de Ponthieu ([1220]-Abbeville 16 Mar 1279, bur monastery of Valoires). "Jehans de Neele cuens de Pontieu de Monsteruel et d’Aubemarle" appointed "la noble dame Jehane…roine de Castele et de Lyon contesse de Pontieu nostre…fame" as his proxy to pursue a claim against the monks of Saint-Sauve by charter dated 17 Oct 1270[4138]. The Continuator of Florence of Worcester records the death in 1279 of "regina Hispanie, domina Pontivi, mater Alienoræ reginæ Angliæ"[4139]. Jean [I] & his first wife had children