See also: Dammartin

Renaud de Dammartin , born towards 1165, died in 1227, was count de Boulogne of 1190 with 1227, count de Dammartin of 1200 with 1214 and count d' Aumale of 1204 with 1206 and count de Mortain of 1206 with 1214. It was wire of Albéric II, count de Dammartin, and of Mathilde de Clermont.

Raised at the Court of France, he becomes the friend of childhood of Philippe II Auguste, king de France, he fights néanmois, on the order of his father, under the banner of Plantagenêts. He is forgiven, because he did nothing but follow the paternal orders and marries a cousin of the king, Marie de Châtillon, girl of Guy II, lord of Châtillon, and Alix de Dreux.

On the council of Philippe Auguste, who wishes to detach Bolted it Flemish influence, he repudiates his wife to remove and marry of force Ide of Lorraine († 1216), countess of Boulogne, widow of Bertold IV of Zähringen and girl of Mathieu of Alsace and Marie of Blois, count and countess of Boulogne. By doing this, it places the Comté of Boulogne, which depended until there on the county on Flanders, under the direct vassalage of the kingdom of France. This marriage makes it powerful and causes jealousies, in particular in the family of Dreux, relative of Marie de Châtillon, and the family of Guînes, the count de Guînes being been engaged of Ide.

In 1203, Renaud and his wife grant a charter the town of Boulogne, giving privileges to the merchants of the city. Those Ci have in fact probably bought their freedom realizing finance with Renaud, always with money court. In 1204, Philippe Auguste gives him the county of Aumale, which it exchanges in 1209 against the county of Mortain, but Renaud takes his distances again.

In 1211, he refuses to appear before the king of France following a disagreement which opposed it to the bishop of Beauvais Philippe de Dreux, then negotiates with Jean without Ground, joined it in 1212 and homage returns to him.

With the emperor Othon IV of Brunswick and the Ferrand of Flanders, it attacks the kingdom of France in 1214, and the battle between the two armies took place with Bouvines. Overcome, it is one of the last to be gone and refuses to be submitted to the king. Philippe Auguste confiscates his grounds to him, to give them his son Philippe Hurepel and Marie this one with the girl of Renaud Mathilde de Dammartin, and Renaud will remain imprisoned in the fortress of Fibula until his death in 1227.

Children

It have children of Marie de Châtillon. D' Ide of Lorraine, it had a girl:

• Mathilde de Dammartin (1202 † 1260), countess of Boulogne, Aumale and Dammartin, girl of the precedents