Ermentrude of Roucy

Ermentrude de Roucy (c. 951 – 5 May 1005) (Irmtrude) was a Countess and Duchess of Burgundy.

Ermentrude was a daughter of Renaud of Roucy and his wife, Alberade of Lorraine, daughter of Gilbert, Duke of Lorraine.

By 971, Ermentrude married and thus became a countess of Mâcon. They had:

• Létaud, archbishop of Besançon;
• Aubry, abbot of Saint-Paul de Besançon;
• Béatrice de Mâcon (d.1030), who was married in 975 to , and afterwards to the Count Hugues du Perche;
• Perhaps a daughter, N de Mâcon, the putative spouse of Eble de Poitiers, son of William IV of Aquitaine and Emma of Blois; they were possibly the parents of Ebles I of Roucy and all of his siblings, including Yvette de Roucy, the wife of either Manasses II or Manasses III of Rethel.

Ermentrude also married Otto-William, Count of Burgundy. They had:

• Guy I of Mâcon
• Matilda, married Landri of Nevers
• Gerberga, married William II of Provence
• Reginald I, Count of Burgundy
• Agnes of Burgundy, Duchess of Aquitaine, married William V of Aquitaine

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