Duchess of Brittany, Countess of Bretagne Constance
1166 - 1201 (35 years)(
= Descendancy chart to this point, 
= Expand, 
= Collapse)
- 1 Duchess of Brittany, Countess of Bretagne Constance [1] b. 12 Jun 1166 d. 31 Aug 1201
- + Earl of Chester Ranulph
- + Viscount Guy of Thouars
- Duke of Brittany, Prince of England Geoffrey Plantagenet b. 23 Sep 1158 d. 19 Aug 1186
- 2 Princess of England Eleanor [1.1] b. 1184 d. 10 Aug 1241
- 2 Princess of England Maud [1.2] b. Abt 1185
- 2 Duke of Brittany Arthur, I [1.3] b. 30 Apr 1187 d. 3 Apr 1203
- 2 Princess of England Eleanor [1.1]
- + Earl of Chester Ranulph