Rivallon of Dol-Combourg was born to Hamo I, Viscount of Alet and Roianteline. He would enter marriage with Evrard, Count of Bretueil and Viscount of Chartres's daughter, Aremburga de Puiset. He died around 1065. In his lifetime, he rebelled

Breton-Norman War

The Breton-Norman War was a war between the Duchy of Brittany and the Duchy of Normandy in the 11th century.- War :Brittany, an independent Celtic duchy, had a traditional rivalry with neighboring Normandy...

 against Conan II, Duke of Brittany

Conan II, Duke of Brittany

Conan II of Rennes was Duke of Brittany, from 1040 to his death. Conan was the eldest child and heir of Alan III, Duke of Brittany by his wife Berthe de Blois, and member of the House of Rennes...

 with the aid of Geoffrey III of Anjou

Geoffrey III of Anjou

Geoffrey III of Anjou , called le Barbu , count of Anjou, was the eldest son of Ermengarde of Anjou, the daughter of Fulk III of Anjou, and of the count of Gâtinais....

 and William, Duke of Normandy

William I of England

William I , also known as William the Conqueror , was the first Norman King of England from Christmas 1066 until his death. He was also Duke of Normandy from 3 July 1035 until his death, under the name William II...

. His children were Saint Gilduin (d. 1077), John, Archbishop of Dol, Bertha, Countess of Rennes, and William, Abbot of Saint Florent

William, Abbot of Saint Florent

William, Abbot of St-Florent was the son of Rivallon I of Dol and Aremburga de Puiset. William Abbot of St. Florent served in 1070 as as Abbot.- References :http://www.genealogy.theroyfamily.com/p51515.htm...

.