Ermengarde of Tonnerre
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Ermengarde (c. 1032 – 1083), daughter of Renauld, Count of Tonnerre and Herviz,[1] married William I, Count of Nevers[1] in 1045. She had six children:
- Ermengarde (born 1050, date of death unknown), married Hubert I, Count of Beaumont[2]
- Robert (1052 – February 12, 1095), later Bishop of Auxerre[2]
- William II (1052–1090), inherited grandfather's title as Count of Tonnerre[2]
- Heloise (born 1056, date of death unknown), married William, Count of Évreux[2]
- Sibille (1058–1078), married Hugh I, Duke of Burgundy
- Renauld II (1059–1089), inherited father's title as Count of Nevers.[2]
Her husband William I was the son of Renauld I, Count of Nevers and Hedwig/Advisa of Auxerre,[2] daughter of Robert II of France.[3]