Matthew I of Montmorency

Matthew I (Mathieu de Montmorency; died 1160) was lord of Montmorency, Marly, 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.

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


 * 1) Henri, 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 died as a Cistercian monk sometime after 1189.
 * 4) Herve de Montmorency, abbot of Saint-Martin de Montmorency, then deacon of the Church and dean of Paris before his death in 1192.
 * 5) Matthieu de Montmorency (d. Constantinople 1204), he inherited the lordship from his brother Theobald; father of Bouchard de Marly.

Alix died before 1141. Matthew then married Adelaide of Maurienne, the widow of Louis VI of France.