Counts of Ponthieu

1. Marie (Jeanne), Countess of Ponthieu and Montreul: Born 17 April 1199, of Aumale, Seine-Maritime, France; Died September 1250. Married about 1212, Aumale, Seine-Maritime, France; Simon II, Count of Dammartin, Count of Aumale: Born about 1180, of Dammartin, Seine-et-Marne, France; Died 21 September 1239, Abbeville, Somme, France; (See Counts of Dammartin)

2. William III, Count of Ponthieu: Born 1179, Ponthieu, France; Died 1221, France; Married 20 August 1195, Castile, Spain; Alix, Princess of France: Born about 1170, France; Died 1221. (See Kings of France and England)

3. Jean I, Count of Ponthieu and Montrreuil: Born about 1135, Montreuil, France; Died 1191, Acre, Palestine; Married before 1179; Beatrice De Saint Pol: Born about 1135, of Saint Pol, France.

Beatrice's Parents--

• I. Anselme De Saint Pol: Born about 1090, of Saint Pol, France; Died 1174; Married before 1145; Eustache De Champagne: Born about 1090, of Champagne, France.

Jean's Parents--

4. Guy II, Count of Ponthieu: Born about 1090, of Ponthieu, France; Died 1147; Married before 1145; Ida De Saint Pol, Countess of Ponthieu: Born about 1090, of Saint Pol, France.

Ida's Parents and Grandparents--

• I. Hugues III Canadavene Saint Pol: Born 1068, of Saint Pol, Artois, France; Married Beatrix (Saint Pol): Born 1070, of Saint Pol, Artois, France.
  • A. Hugues II, Count of Saint Pol: Born 1045, of Saint Pol, Artois, France; Died 1130; Married about 1006, of Saint Pol, Artois, France; Elizabeth (Saint Pol): Born 1049, of Saint Pol, Artois, France.

Guy's Parents--

5. Guillaume III, Duke of Alencon, Count of Ponthieu: Born about 1055, of Alencon, Orne, France; Died 1172; Married Alice (Helia), Countess of Burgundy, Duchess of Alencon: Born about 1055, of Bourgogne, France; Died 1191.

6. Robert II, Duke of Alencon: Born about 1039; Died 1119; Married Agnes, Countess of Ponthieu, Countess of Shrewsbury: Born about 1066, of France.

Agnes' Parents--

• I. Guy I, Count of Ponthieu: Born about 1036, of France; Died 13 October 1100; Married Ada, Countess of Ponthieu: Born about 1006.

Robert's Parents--

7. Roger De Montgomery: Born about 1005, of Normandy, France; Married about 1038; Mabel D'Alencon: Born about 1015, Alecon, Bell, France; Died 1082, France.

Mabel's Parents--

• I. Guillaume D'Alencon: Born about 990, of Alencon, Bell, France; Died 1048; Married before 1015; Bildeburge De Beaumont: Born about 995, of Alencon, Bell, France.

Roger's Parents--

8. Roger De Montgomery: Born about 980.