Bertha of Blois

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. In 1029, she married Alain III, Duke of Brittany, he died in 1040. In 1046, she married Hugh IV, Count of Maine.

Marriage & issue
Bertha and Alain had two children:
 * Conan II, Duke of Brittany
 * Hawise, Duchess of Brittany

With her second husband, Hugh IV, Count of Maine, Bertha had two children:
 * Herbert II, Count of Maine
 * Marguerite (1045 - 1063), betrothed to Robert Curthose