The county of the Vexin was a medieval French county which comprised the Vexin Français and the Vexin Normand until the loss of the latter in 911 to Duke Rollo of Normandy. The counts descended from Nibelung, son of Childebrand, son of Pepin of Heristal.
c.800 Nibelung I, also Nivelon or Nebelon
c.840 Nibelung II, son
c.860 Waleran I, son, also Galeran
c.900-c.923 Nibelung III, son
c.923-956 Waleran II, son, also count of Amiens in right of his wife Adela, married 923
956-987 Walter I, also count of Valois and Amiens
987-1027 Walter II the White, also count of Valois and Amiens
1027-1035 Drogo, also count of Valois and Amiens
1035-1063 Walter III, also count of Valois, Maine, and Amiens
1063-1074 Ralph, also count of Valois and Amiens
1074-1077 Simon, also count of Valois and Amiens
To the crown in 1076 or 1077.
Louis-César de Bourbon (1673-1783), son of Louis XIV of France and Madame de Montespan;
Rev. Jaye Muller (b1967) Comte du Vexin, Baron de Livarot and Baron de Blangy: Château de Guilleragues
