| Birth* | Guillaume I De Craon Seigneur was born in 1318 at France. |
| Marriage* | He married Marguerite De Flandres Vicomtesse de Châteaudun, daughter of Jean De Flandres Seigneur de Crèvecoeur and Béatrice De Châtillon, before 1341 at France. |
| Death* | Guillaume I De Craon Seigneur died on 8 January 1397 at France. |
| Burial* | He was buried on 8 January 1397 at Cordeliers, Châteaudun, Orléanis, France. |
| Note | He Chevalier, Seigneur de Dommart, Ste. Maure, de La Ferté-Bernard, and de Sablé, Vicomte de Châteaudon, Chamberlain to the King of France. . |
| Note* | He Chevalier, Seigneur de Dommart, Ste. Maure, de La Ferté-Bernard, and de Sablé, Vicomte de Châteaudon, Chamberlain to the King of France. . |
