Joan de Dammartin, b. ABT 1216 in Dammartin, Seine-et-Marne, France, d. 15 March 1279 in Abbeville, Ponthieu, France

Father: Simon II de Dammartin, Count of Aumale, b. ABT 1180 in Dammartin, Seine-et-Marne, France, d. 21 September 1239 in Abbeville, Ponthieu, France
Mother: Marie of Ponthieu, b. 17 April 1199 in Aumale, Normandy, France, d. September 1250 in Normandy, France

Spouse: Fernando III "el Santo", King of Castile and Leon, b. 1199 in Leon, Spain, m. Beatrix (Elizabeth) of Swabia, 30 November 1219 in Burgos, Spain, d. 30 May 1252 in Sevilla, Spain, He became King of Castile, 1217 in Castile, Spain

Father: Alfonso IX, King of Leon, b. 15 August 1171 in Zamora, Leon, Spain, d. 24 September 1230 in Villaneuva de Sarria, Lugo, Spain, He became King of Leon, 1188 in Leon, Spain
Mother: Berengeria of Castile, b. January 1175 in Burgos, Spain, d. 8 November 1246 in Burgos, Spain

Known as Ferdinand the Saint, he took Cordoba and Seville from the Moors and reduced their holdings in Spain to Granada. He codified the laws of Christian Spain and persecuted the Albigensian heretics. Fernando is regarded the founder of the University of Salamanca and was cononized by Pope Clement X.

Married 1237 in Burgos, Castile, Spain.

Children:

1. Eleanor of Castile, b. 1244 in Burgos, Spain, m. Edward I "Longshanks", King of England, 18 October 1254 in Burgos, Castile, Spain, d. 24 November 1290 in Lincolnshire, England, buried 16 December 1290 in Westminster Abbey, London, Middlesex, England

Spouse: Jean de Nesle

Married May 1260.

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Simon II de Dammartin, Count of Aumale, b. ABT 1180 in Dammartin, Seine-et-Marne, France, d. 21 September 1239 in Abbeville, Ponthieu, France

Father: Alberic II de Dammartin, b. ABT 1160, d. 1200
Mother: Marie (Matilda) of Clermont, b. ABT 1165 in Montmorencey, France

Spouse: Marie of Ponthieu, b. 17 April 1199 in Aumale, Normandy, France, d. September 1250 in Normandy, France

Father: William IV, Count of Ponthieu, b. 1159, d. 1221
Mother: Alice of France, b. aft. 1160

Married 1208.

Children:

1. Joan de Dammartin, b. ABT 1216 in Dammartin, Seine-et-Marne, France, m. Fernando III "el Santo", King of Castile and Leon, 1237 in Burgos, Spain, m. Jean de Nesle, May 1260, d. 15 March 1279 in Abbeville, Ponthieu, France
2. Philippa of Dammartin, m. Raoul II of Lusignan, 1239/40, m. Raoul II, Lord of Coucy, ABT 1246, m. Otto II, Count of Guelders, 1252/4

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Alberic II de Dammartin, b. ABT 1160, d. 1200

Father: Alberic I, Count of Dammartin, b. ABT 1130, d. 1183
Mother: Clemence Bar-le-Duc, b. ABT 1135 in Bar-le-Duc, France

Spouse: Marie (Matilda) of Clermont, b. ABT 1165 in Montmorencey, France

Father: Mathieu II Montmorency, b. in France, d. 1230

Married.

Children:

1. Renaud I, Count of Dammartin, b. ABT 1165, m. Marie de Châtillon, m. Ida, Countess of Boulogne, d. 1227 in Péronne, Somme, France, cause of death was suicide
2. Simon II de Dammartin, Count of Aumale, b. ABT 1180 in Dammartin, Seine-et-Marne, France, m. Marie of Ponthieu, 1208, d. 21 September 1239 in Abbeville, Ponthieu, France
3. Julia of Dammartin, m. Hugh de Gournay
4. Agnes Dammartin, b. ABT 1195, m. William de Fienes (1)

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Alberic I, Count of Dammartin, b. ABT 1130, d. 1183

Father: Hugh II, Count of Dammartin, b. ABT 1100
Mother: Rothride Dammartin, b. ABT 1105

Spouse: Clemence Bar-le-Duc, b. ABT 1135 in Bar-le-Duc, France

Father: Renaud I "the One-Eyed", Count of Bar, b. ABT 1100 in Bar-le-Duc, France, d. 1150
Mother: Gisele de Vaudemont, b. ABT 1105 in Vaud Canton, Switzerland

Married.

Children:

1. Alberic II de Dammartin, b. ABT 1160, m. Maud de Montmorency, d. 1200

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Hugh II, Count of Dammartin, b. ABT 1100

Spouse: Rothride Dammartin, b. ABT 1105

Married.

Children:

1. Alberic I, Count of Dammartin, b. ABT 1130, m. Clemence Bar-le-Duc, d. 1183

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Mathieu II Montmorency, b. in France, d. 1230

Father: Bouchard IV de Montmorency

Children:

1. Marie de Montmorency, b. ABT 1165 in Montmorencey, France, m. Alberic II de Dammartin
2. Mathieu III de Montmorency, b. ABT 1170

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Bouchard IV de Montmorency

Children:

1. Mathieu II Montmorency, b. in France, d. 1230

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Renaud I, Count of Dammartin, b. ABT 1165, m. Marie de Châtillon, d. 1227 in Péronne, Somme, France, cause of death was suicide

Father: Alberic II de Dammartin, b. ABT 1160, d. 1200
Mother: Marie (Matilda) of Clermont, b. ABT 1165 in Montmorencey, France

Spouse: Ida, Countess of Boulogne, b. ABT 1160, m. Gerard of Guelders, m. Berthold IV, Duke of Zähringen, d. 1216

Father: Matthew of Alsace, b. ABT 1137, d. 1173
Mother: Mary (Marie) I, Countess of Boulogne, b. 1136, d. 25 July 1182 in St. Austrebert, Montreuil, France

Married

Children:

1. Matilda II, Countess of Boulogne, b. 1202, m. Philip I Hurepel, Count of Boulogne, 1223, m. Alfonso III, King of Portugal, 1238, d. January 1259

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