Family
ClaimDetailEvidence
FatherAdalberto, Associate-King of Italy (~936-<975) [S913]
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MotherGerberge (e937-~991) [S913]
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Spouse 1stErmentrude de Roucy (~952-~1004) 
Child +Mathilde de Mâcon (e975-1005) [S907]
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Child +Renaud I, Count of Burgundy (~990-1057) [S907]
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Child +Agnes de Mâcon (~990-1068) [S907]
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Attributes
ClaimDetailEvidence
GenderMale
NameOtto-Guillaume , Count of Macon [S1475]
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NameOthon Guillaume , Comte de Macon et de Nevers [S907] [S921] [S929]
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NameGuglielmo di Ivrea [S907] [S913]
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NameOthon-Guillaume [S907] [S913]
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NameOthon [I], Comte de Macon [S913]
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FatherAdalberto, Associate-King of Italy (~936-<975) [S913]
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MotherGerberge (e937-~991) [S913]
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Marriage 1stErmentrude de Roucy (~952-~1004) [S907] [S921] [S3173]
Cawley says before 981/982, and that daughter Mathilde married about 989, so presumably much sooner.
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Timeline
ClaimDateDetailAgeEvidence
Birthabt 960France [S907] [S913] [S921]
960-962
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Titleabt 981Count of Macon [S907] [S929]
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Title986Count of Nevers [S907]
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Title 1002 to 1015Duke of Burgundy [S907]
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Title1015Count of Burgundy [S907]
after renouncing his claims to the duchy
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DeathSep 21, 1026Dijon, Burgundy, France [S907] [S913] [S921]
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Sources
IndexTitle
[S907] Cawley, Charles, "Foundation of Medieval Genealogy (Medieval Lands - Burgundy Duchy Nobility: Mâcon & Beaujeu)" (2006-7 (v1.2 Updated 25 August 2007)) (https://fmg.ac/Projects/MedLands/BURGUNDIAN NOBILITY.htm).
[S913] Cawley, Charles, "Foundation of Medieval Genealogy (Medieval Lands - Northern Italy 1: 900-1000)" (2006-7 (v1.2 Updated 22 August 2007)).
[S921] Cawley, Charles, "Foundation of Medieval Genealogy (Medieval Lands - Northern France: Artois, Boulogne)" (2006-7 (v1.2 Updated 21 January 2007)) (https://fmg.ac/Projects/MedLands/NORTHERN FRANCE.htm).
[S929] Cawley, Charles, "Foundation of Medieval Genealogy (Medieval Lands - Aquitiane Dukes)" (2006-7 (v1.3 Updated 18 July 2007)) (https://fmg.ac/Projects/MedLands/AQUITAINE.htm).
[S1475] Baldwin, Stewart, "The Henry Project - Otte-Guillaume" (April 24, 2008) (https://fasg.org/projects/henryproject/data/otwil000.htm).
[S3173] Cawley, Charles, "Foundation of Medieval Genealogy (Medieval Lands - Northern France: Laon, Coucy, Roucy, Soissons)" (v4.13 Updated 30 April 2024) (https://fmg.ac/Projects/MedLands/nfralaoncou.htm).