Bertha of Blois
Duchess consort of Brittany
From Wikipedia, the free encyclopedia
Bertha of Blois (French: Berthe de Blois; c. 1005 — c. 1080), was a Duchess consort of Brittany and a countess consort of Maine.

Life
Bertha was the daughter of Odo II, Count of Blois and Ermengarde of Auvergne.[1] In 1029, she married Alain III, Duke of Brittany,[2] he died in 1040.[3] In 1046, she married Hugh IV, Count of Maine.[1]
Marriage & issue
Bertha and Alain had two children:
With her second husband, Hugh IV, Count of Maine, Bertha had two children:
- Herbert II, Count of Maine[6]
- Marguerite (1045 - 1063), betrothed to Robert Curthose[6]