Matthieu I of Montmorency

Matthieu Ier de Montmorency (c. 1100 - 1160) was lord of Montmorency, of Écouenof Marly-le-Roi, in Conflans-Sainte-Honorine and Attichy. He was also Constable of France from 1138 to 1160 under Louis VII.

He was the eldest son of Bouchard IV de Montmorency and Agnes de Beaumont-sur-Oise, lady of Conflans-Sainte-Honorine.

In 1126 he married Alice FitzRoy, illegitimate daughter of King Henry I of England, and had the following issue:

1. Henry, died young before 1160
2. Bouchard V de Montmorency (d. 1189 in Jerusalem), who married in 1173 Laurette of Hainaut (d. 9 August 1181), daughter of Count Baldwin IV of Hainaut. They had a son Matthieu II de Montmorency, nicknamed the Great.
3. Theobald de Montmorency, seigneur de Marly, he went on crusade in 1173. He ended his life as a monk of Citeaux in 1190.
4. Herve de Montmorency (d. 1192), abbot of Saint-Martin de Montmorency, then deacon of the Church and dean of Paris.
5. Matthieu de Montmorency (d. Constantinople 1204), he inherited the lordship from his brother Theobald and married Mathilde de Garlande (d.1224) had issue.

In 1141, Matthieu de Montmorency married his second wife Adelaide of Maurienne, the widow of Louis VI of France.

He also has a daughter however it is uncertain which wife was her mother:

1. Alice; m.Gasce de Poissy (d.1189)

Persondata
Name	Matthieu 01 Of Montmorency
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Short description
Date of birth	1100
Place of birth
Date of death	1160
Place of death