| Geoffrey II of England Duke of Brittany (1158 - 1186) |
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| Constance of Brittany Duchess of Brittany (~1161 - 1201) |
| Arthur of Brittany |
| b. 29 Mar 1187, Nantes, Brittany, France (posthumous) d. abt 3 Apr 1203, Rouen, Normandy, France; murdered bur. Notre Dame des Prés occ. cen. im. . ud. |