William I de Nevers, Count of Nevers, b abt 1024, d 20 Jun 1100. He md Ermengarde de Tonnerre 1045, daughter of Renaud of Tonnerre, Count of Tonnerre. She was b abt 1032.
Children of William I de Nevers and Ermengarde de Tonnerre were:

• Renaud II de Nevers, Count of Nevers and Auxerre, b abt 1050.
• Daughter de Nevers [b] b abt 1054, d 14 Oct 1090/95. She md Hubert be Beaumont, Viscount of Maine, 6 Dec 1067, son of Raoul/Ralph III de Beaumont, Viscount of Maine, and Emma de Montrevault.

Ermengarde de Nevers b abt 1083. She md Milo de Courtenay, Sire de Courtenay, abt 1098, son of Joscelin de Courtenay and Isabel de Montlhery.

NOTES:
a. According to Line 107[19-20] in Ancestral Roots, 7th ed., Renaud I de Nevers married Adele of France, the daughter of Robert II and Constance of Provence. Yet, in looking in the index of AR for this same individual, Adele, of same parentage, this line number is not mentioned; rather several other lines, which show her as the identical individual, stating she married [1] Richard, Duke of Normandy in 1027, and [2] Baldwin V de Lille in 1028. Thus, while she is still shown here per AR's Line 107, as daughter of Robert II, King of France, and Constance of Provence, she is not linked to that lineage page because of this seeming contradiction.

b. Her connection here is based upon several posts on soc.genealogy.medieval; Complete Peerage states that Hubert, Count of Maine, married a daughter of William, Count of Nevers, but does not mention his wife. Several posters on SGM state that her name was Ermengarde, daughter of William and Ermengarde de Tonnere, and that she was the aunt of her namesake who married Milo de Courtenay.

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SOURCES:
AR: Line 107[20-23]; SGM: Leo Van de Pas.

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