Matilda FitzRoy, Duchess of Brittany

Maud or Matilda Fitzroy, was a duchess consort of Brittany by her marriage to Conan III, Duke of Brittany. She was an illegitimate daughter of Henry I of England by one of his unknown mistresses.

She married, before 1113, Conan III, Duke of Brittany, and had three children, Hoel, Count of Nantes, Bertha, Duchess of Brittany (born c. 1114), and Constance.