Family
ClaimDetailEvidence
FatherThierry de Lorraine II, Duke of Lorraine (e1056-1115) [S756] [S1009]
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MotherGertrude of Flanders (~1070-1117) [S756] [S1009]
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Spouse 2ndSybil of Anjou (~1112-1165) 
Child +Mathieu de Flandre (~1137-1173) [S756] [S2718] [S3164]
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Child +Marguerite II, Countess of Flanders (~1140-1194) [S756] [S3164]
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Attributes
ClaimDetailEvidence
GenderMale
NameTheirry I, Count of Flanders [S1539] [S2718] [S3164]
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NameThierry , Count of Flanders [S756]
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NameTheirry of Lorraine [S756]
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NameThierry [S756]
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NameDietrich II, Count of Alsace [S756]
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NameDietrich II, Count of Flanders [S756]
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NameThierry of Lorraine, Count of Flanders [S756]
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NameDietrich of Alsace, Count of Flanders [S756]
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NameThierry of Alsace, Count of Flanders [S756]
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NameThierry de Lorraine I, Count of Flanders [S1009] [S3164]
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FatherThierry de Lorraine II, Duke of Lorraine (e1056-1115) [S756] [S1009]
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MotherGertrude of Flanders (~1070-1117) [S756] [S1009]
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Timeline
ClaimDateDetailAgeEvidence
Birth 1099 - 1101Belgium [S1009] [S1539] [S3164]
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Title1128Count of Flanders [S756] [S1009] [S3164]
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Marriage 2nd1134Sybil of Anjou (~1112-1165) [S756] [S1539] [S3164]
Weis says 1131
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MilitaryJun 1147 [S1539]
left France on Second Crusade
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DeathJan 17, 1168 [S756] [S1009] [S1539] [S3164]
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Sources
IndexTitle
[S756] Weis, Frederick Lewis, "Ancestral Roots of Sixty Colonists Who Came To New England before 1700, 7th Ed." (Genealogical Publishing Co., Inc., Baltimore, 1999).
[S1009] Cawley, Charles, "Foundation of Medieval Genealogy (Medieval Lands - Lorraine)" (v1.1 Updated 04 April 2007) (https://fmg.ac/Projects/MedLands/LORRAINE.htm).
[S1539] Cawley, Charles, "Foundation of Medieval Genealogy (Medieval Lands - Anjou Counts)" (v1.5 Updated 16 March 2010) (https://fmg.ac/Projects/MedLands/ANJOU, MAINE.htm).
[S2718] Cawley, Charles, "Foundation of Medieval Genealogy (Medieval Lands - England Kings 1066-1837)" (v4.1 Updated 24 November 2019).
[S3164] Cawley, Charles, "Foundation of Medieval Genealogy (Medieval Lands - Flanders: Hainaut)" (v4.10 Updated 11 December 2023) (https://fmg.ac/Projects/MedLands/FLANDERS, HAINAUT.htm).
Kinship Lines for Theirry I, Count of Flanders
Spouse/PartnerDegreeRelationshipMRCA
Sybil of Anjou (~1112-1165)124th Cousin 2x removedGerberga of Saxony (914-984)
Sybil of Anjou (~1112-1165)125th CousinFulk II, Count of Anjou (e912-958)
Sybil of Anjou (~1112-1165)125th CousinGerberge (e913-<952)
Sybil of Anjou (~1112-1165)156th Cousin 1x removedRobert I, King of France (866-923)
Sybil of Anjou (~1112-1165)156th Cousin 1x removedHerbert de Vermandois II, Count of Vermandois and Troyes (~880-943)
Sybil of Anjou (~1112-1165)156th Cousin 1x removedLiegarde of France (e887-)