Alain III "le Noir" DE PENTHIÈVRE, 1st Earl of Richmond
(Bef 1100-1146)
(-By 1164)
Henry DE HUNTINGDON, Prince of Scotland
Countess Ada (Adelaide) DE WARENNE
(Abt 1122-1178)
Conan IV "le Petit" DE PENTHIÈVRE, Duc de Bretagne, Earl of Richmond
(Abt 1138-1171)
Princess Margaret DE HUNTINGDON, Countess of Hereford
Dss Constance DE BRETAGNE
(Abt 1162-1201)


Family Links

1. Geoffrey PLANTAGENET, Duke of Brittany, Earl of Richmond

  • Mathilde DE BRETAGNE
  • Eleonore DE BRETAGNE
  • Duc Arthur I DE BRETAGNE
2. Ranulf DE BLUNDEVILLE, Earl of Chester
3. Guy DE THOUARS, Duc de Bretagne

Dss Constance DE BRETAGNE

  • Born: Abt 1161, Bretagne, France
  • Married (1): 1181
  • Married (2): 3 Feb 1188
  • Married (3): Oct 1199
  • Died: 5 Sep 1201, Nantes, Bretagne, France
  • Buried: 5 Sep 1201, Bégard Monastery, transferred 24 Nov 1225 to Villeneuve-les-Nantes, Abbaye de Notre-Dame

  General Notes:

Compiler's 22 x great-grandmother

  Research Notes:

The Chronicle of Alberic de Trois-Fontaines names "Constantiam comitis Conani filia" as wife of "Gaufridus dux Britannie comes Richemontis filius Henrici regis Anglie natu tertius", specifying that she married [thirdly] "Guido frater vicecomitem de Tuart". She is named by Matthew of Paris, who also gives her parentage, when he records her betrothal.

She succeeded her father in 1171 as CONSTANCE Dss de Bretagne. Robert of Torigny records the marriage in 1182 of "Gaufredus dux Britanniæ filius regis Henrici" and "filiam Conani comitis Britanniæ". The Annales Cestrienses record in 1188 that “Rannulphus comes Cestrie” was knighted “in die circumcisionis domini apud [Cadomum]” by King Henry II who also granted him “relictam [Galfridi filii sui]...comitissam Britannie filia Alani comitis Britannie...Constancia et toto comittatu de Richemund” whom he married “in die Sancte Werburge...III Non Feb apud ---“. The Genealogia Comitum Richemundiæ records that "Constantia filia Conani" married secondly "Ranulphus Comes Cestriæ", stating that he divorced her because of her adultery and that the marriage was childless. Living apart from her second husband, he captured her at Pontorson in 1196 and imprisoned her at his castle at Beuvron. She was liberated in Summer 1198, and repudiated her marriage. The Genealogia Comitum Richemundiæ records that "Constantia filia Conani" married thirdly "Guidoni de Thoarcio".

The Annals of Burton record the death in 1201 of “Constantia mater Arthuri comitis Britanniæ”. The Genealogia Comitum Richemundiæ records the death in 1201 of "Constantia filia Conani" and her burial "apud Begar". The Chronicon Britannicum records the death "III Non Sep" in 1201 of "Constantia Ducissa Britanniæ". Another Chronicon Britannicum records the death "pridie non Sep" in 1201 of "Constantia comitissa, Conani filia, mater Arturi". The Chronicon Ruyensis Cœnobii records the death in 1201 of "Constantia Comitissa apud Nannetum". 1

  Marriage Information:

Constance married Geoffrey PLANTAGENET, Duc de Bretagne, Earl of Richmond, son of Henry II "Curmantle" PLANTAGENET, King of England, and Eléonore D' AQUITAINE, Duchesse d' Aquitane, Comtesse de Poitou, in 1181. (Geoffrey PLANTAGENET was born on 23 Sep 1158 and died on 19 Aug 1186 in Paris, France.)

  Marriage Information:

Constance also married Ranulf DE BLUNDEVILLE, Earl of Chester, son of Hugh "le Meschin" DE KEVELIOC, 3rd Earl of Chester, and Bertrade DE MONTFORT, 3 Feb 1188. Repudiated 1198.(Ranulf DE BLUNDERVLLE was born about 1170 in Oswestry, Powys, Wales, died on 28 Oct 1232 in Wallingford and was buried in the Abbey of St Werburgh, Chester, England.)

  Marriage Information:

Constance also married Guy DE THOUARS, Duc de Bretagne, son of Vcte Geoffroi V DE THOUARS and Aénor (Aimée) DE LUSIGNAN. (Guy DE THOUARS died on 13 Apr 1213 in Château de Chemillé.)


1 Foundation for Medieval Genealogy, Medlands: Constance de Bretagne.

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