. Guy was the eldest son of William I of Dampierre and Ermengarde of Toucy, lady of Champlay and daughter of Ithier III de Toucy and Elisabeth of Joigny. During the lifetime of his father, Guy received the Lordship of
Moëslains and maybe the viscounty of Troyes. During this time, he signed charters under the name of Guy de Moëslains. Around 1174, Guy succeeded his father as Lord of
Dampierre,
Saint-Dizier and
Saint-Just. Like his father before him, he is also named constable of Champagne, but this position was not hereditary. In 1189, he participated in the
Third Crusade as a member of an advance party who initiated the
Siege of Acre in the fall of the year. After the departure of King
Philip Augustus, he stayed in the Holy Land and fought at the
Battle of Arsuf. He came back to Dampierre in late 1192. His name and arms are in the
Salles des Croisades of the
Palace of Versailles . In 1194, Guy fought with Philip Augustus against the English and was at the
battle of Fréteval in the rearguard that covered the escape of the King. In 1202, he participated in the conquest of
Normandy and fought at the battle of
Mirebeau, the
siege of Château Gaillard and the catch of
Falaise,
Caen,
Bayeux and
Rouen. In 1199, for service rendered, the King gave him the Lordship of
Montluçon. In 1210, Guy was sent at the head of a royal army sent by Philip Augustus to confiscate the lands of Count
Guy II of Auvergne. He took
Nonette, the
castle of Tournoël and
Riom in December 1213, and removed Guy of Auvergne from power. He was named by the King constable of Auvergne and managed the county for him. Guy also fought at the
battle of Bouvines and his participation was decisive in the French victory. During the
war of the Succession of Champagne, Guy supported the Countess-Regent
Blanche of Navarre and her son
Theobald against the pretender
Erard of Brienne-Ramerupt and his wife
Philippa of Champagne. Guy died on 18 January 1216 and was buried in Saint-Laumer Abbey at
Blois. ==Family==