Agnes (Matilda) DE POITIERS
(1097-After 1135)
Hugues VII "Le Brun" DE LUSIGNAN
(1065-Aft 1151)
Sarazine (Sarrasine) DE LÉZAY
(Abt 1067-1144)
Vcte Geoffroi V DE THOUARS
Aénor (Aimée) DE LUSIGNAN
Guy DE THOUARS, Duc de Bretagne


Family Links

1. Dss Constance DE BRETAGNE

2. Eustachie D' ARGENTON, Dame de Chemillé
  • Sn Pierre I DE CHEMILLÉ & de Mortagne, de Brissac
  • Sn Thomas DE CHEMILLÉ

Guy DE THOUARS, Duc de Bretagne

  • Married (1): Oct 1199
  • Married (2): Abt 1203
  • Died: 13 Apr 1213, Château de Chemillé

  General Notes:

Compiler's 22 x great-grandfather

  Research Notes:

Aimericus vicecomes Thoarcii” donated property to Chaise-le-Vicomte by undated charter, witnessed by “Aumou mater vicecomitis et Sibilla uxor eiusdem...fratres vicecomitis Guido, Hugo, Gaufridus, Raimundus...vicecomitis sorores Maria, Amablia”. The Chronicle of Alberic de Trois-Fontaines records that Philippe II King of France besieged "Albam Marnam castrum" in 1196 and captured "Guido frater Reymundi vicecomitis Thoarcensis", who later married "matrem Arturi iunioris Constantiam relicta…Gaufridi" and became "comes Britannie". An order of King John dated 4 Jun 1202 recorded the homage of "A. vic Toarc" naming "Guidon de Toarc, Hug de Toarc fratrum meorum…" as fiduciaries and providing "Gaufr filium meum" as hostage. After the death of Arthur Duke of Brittany in 1203, he was chosen by the nobles of Brittany as GUY Duke of Brittany during the minority of his daughter. His English lands were confiscated in 1203. Philippe II "Auguste" King of France conquered Brittany in 1206, deposed Guy as Duke but left him as Regent, a post which he continued to hold until 1213.

The Chronique de Guillaume de Nangis records that "Guy de Thouars" died of leprosy. 1

  Marriage Information:

Guy married Dss Constance DE BRETAGNE, daughter of Conan IV "le Petit" DE PENTHIÈVRE, Duc de Bretagne, Earl of Richmond, and Princess Margaret DE HUNTINGDON, Countess of Hereford, in Oct 1199. (Constance DE BRETAGNE was born about 1161 in Bretagne, France, died on 5 Sep 1201 in Nantes, Bretagne, France and was buried in Bégard Monastery, transferred 24 Nov 1225 to Villeneuve-les-Nantes, Abbaye de Notre-Dame.)

  Marriage Information:

Guy also married Eustachie D' ARGENTON, Dame de Chemillé, daughter of Pierre D' ARGENTON and Sibylle DE MORTAGNE, about 1203. (Eustachie D' ARGENTON died after 1244.)


1 Foundation for Medieval Genealogy, Medlands: Guy.

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