1. COUNT MILON I¹ DE TONNERRE was born between 866 and 978, and died between 977 and 997^[1]. He married INGELTRUDE DE MONTREUIL. ^[2]
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COUNT GUY2 DE TONNERRE, b. about 950; d. in 992[1].

2. COUNT GUY² DE TONNERRE (Milon I¹), son of (1) Count Milon I¹ and Ingeltrude (de MONTREUIL), was born between 881 and 978, and died in 992^[1]. ^[2]
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COUNT MILON II3 DE TONNERRE, b. about 940; d. about 1020[1]; m. ERMENGARDE _____.

3. COUNT MILON II³ DE TONNERRE (Guy², Milon I¹), son of (2) Count Guy², was born between 895 and 993, and died between 1006 and 1026^[1]. He married ERMENGARDE _____.
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COUNT RENAUD4 OF TONNERRE, b. about 1000; d. in 1038[1]; m. HERVISE _____.

4. COUNT RENAUD⁴ OF TONNERRE (Milon II de TONNERRE³, Guy², Milon I¹), son of (3) Count Milon II³ and Ermengarde (_____), was born between 927 and 1024, and died in 1038^[1]. He married HERVISE _____. ^[2]
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ERMENGARDE5 DE TONNERRE, b. about 990/1; d. about 1100/1; m. (AEY-2) COUNT WILLIAM I OF NEVERS, b. about 1030, d. in Nevers, France about 1120, son of (AEY-1) Count Renaud I and (U-17) Adele (of FRANCE), Countess of Auxerre.

5. ERMENGARDE⁵ DE TONNERRE (Renaud of TONNERRE⁴, Milon II de TONNERRE³, Guy², Milon I¹), daughter of (4) Count Renaud⁴ and Hervise (_____), was born between 941/2 and 1039, and died between 1033/4 and 1148. She married (AEY-2) COUNT WILLIAM I OF NEVERS, son of (AEY-1) Count Renaud I and (U-17) Adele (of FRANCE), Countess of Auxerre, who was born about 1030, and died about 1120 in Nevers. ^[2]
Child: See (AEY-2) Count William I of NEVERS