BLOIS Berthe

Aft 1005 - 1085  (< 78 years)

• Name	BLOIS Berthe
  Birth	Aft 1005	Blois, Loir-et-Cher, Centre, France
  Gender	Female
  Death	13 Apr 1085	Chartres, Ille-et-Vilaine, Bretagne, France
  Notes	Berthe de Blois was born sometime after 1005 (est: the date of her parents marriage[1]). Berthe was the daughter of Eudes II Comte de Blois, de Chartres, de Châteaudun, de Tours, de Beauvais, and his second wife, Ermengarde d'Auvergne, daughter of Guillaume IV Comte d'Auvergne and his wife, Humberge de Brioude, whom he married in 1005.[1] Berthe was the sister of : Thibaut de Blois (circa 1010-29/30 Sep 1089), succeeded his father in 1037 as Thibaut III Comte de Blois, de Chartres, de Châteaudun, de Meaux, de Sancerre et de Troyes;[1] Etienne (Stephen) de Blois died 19 May 1048, became Comte de Troyes;[1] Berthe married twice: in 1018, Alain III Duke of Brittany, poisoned 1 Oct 1040, son of Geoffroy I Duke of Brittany and his wife Havise de Normandie,[1] with whom Berthe had children: Conan de Bretagne, died 11 December 1066, succeeded his father in 1040 as Duke Conan II Duke of Brittany, lost the duchy to his paternal uncle Eudes, captured Uncle Eudes and reconfirmed himself as Duke in 1057;[2] Havise de Bretagne, died 19 August 1072, married 1) Baudouin VII Count of Flanders from whom she separated on the grounds of consanguinity, and 2) in 1066 Hoel Comte de Nantes, de Cornouaïlle, et de Léon, son of Alain "Caignart" Comte de Cornouaïlle and his wife, Judith de Nantes;[2] after 14 May 1046, Hughues IV Comte du Maine, died 26 Mar 1051, son of Herbert I "Eveille-chien" Comte du Maine,[1] with whom Berthe had children: Heribert [II] du Maine, died 9 Mar 1062;[2] Marguerite du Maine, born circa 1047/51, died at Fécamp on 13 December 1063, and was buried there;[2] Berthe de Blois, Comtesse du Maine, outlived both of her husbands and all four of her children, dying on 11/13 April 1085,[1] at Chartres, Ille-et-Vilaine, Bretagne, France. Sources ↑ 1.0 1.1 1.2 1.3 1.4 1.5 1.6 Cawley, 2014, "EUDES de Blois". ↑ 2.0 2.1 2.2 2.3 Cawley, DUKES of BRITTANY 970-1066 (FAMILY of COMTES de RENNES), "ALAIN de Bretagne". See also: Charles Cawley, Foundation for Medieval Genealogy (FMG), "B. COMTES de BLOIS [943]-1218: CENTRAL FRANCE", A prosopography of medieval European noble and royal families, Medieval Lands, 23 May 2014, http://fmg.ac/Projects/MedLands/CENTRAL%20FRANCE.htm#_Toc359762884, accessed 7 December 2015. Charles Cawley, Foundation for Medieval Genealogy (FMG), "C. DUKES of BRITTANY 970-1066 (FAMILY of COMTES de RENNES)", A prosopography of medieval European noble and royal families, Medieval Lands, 15 November 2015, http://fmg.ac/Projects/MedLands/BRITTANY.htm#_Toc359762253, accessed 7 December 2015. Evergates, Theodore, ed., Aristocratic Women in Medieval France (University of Pennsylvania Press, Philadelphia, 1999) "Adela of Blois: Family Alliances and Female Lordship" by Kimberly A. LoPrete. Page 12.
  Person ID	I59996	Freeman-Smith
  Last Modified	27 Jan 2026

  
  

  Father	BLOIS Eudes,   b. Abt 0983, Blois, France d. 15 Nov 1037, Bar-le-Duc, Lorraine, France (Age 54 years)
  Relationship	natural
  Mother	AUVERGNE Ermengarde,   b. Abt 0984, Auvergne, Aquitaine, France d. Aft 1042, Auvergne, Aquitaine, France (Age > 59 years)
  Relationship	natural
  Marriage	1005
  Family ID	F26619	Group Sheet  |  Family Chart

  
  

  Family	BRETAGNE Alan,   b. 0997, Bretagne, France d. 01 Oct 1040, Vimoutiers, Orne, Basse-Normandie, France (Age ~ 43 years)
  Marriage	1018
  Children	1. AMIENS Ada,   b. 1030, Amiens, Somme, Picardie, France d. 03 Mar 1066, Ponthieu, France (Age 36 years)  [Father: natural]  [Mother: natural]
  Family ID	F26637	Group Sheet  |  Family Chart
  Last Modified	27 Jan 2026