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.^[1]

Duchess consort of Brittany

Matilda married, before 1113, Conan III, Duke of Brittany, and had:

Hoel (1116 - 1156) – disinherited from the Ducal crown; Count of Nantes;^[2]
Bertha (1114 - after 1155) – married Alan of Penthièvre;^[2]^[a] upon Alan's death in 1146, she returned to Brittany.
Constance (1120 - 1148) – married Sir Geoffroy II, Sire de Mayenne, son of Juhel II, Seigneur de Mayenne.

Notes

Bryan, Elizabeth J. (2016). "Matthew Parker and the Middle English Prose Brut". In Rajsic, Jaclyn; Kooper, Erik; Hoche, Dominique (eds.). The Prose Brut and Other Late Medieval Chronicles. York Medieval Press.
Warren, Wilfred Lewis (1977). Henry II. Yale University Press.

Consorts to early monarchs

c. 578–907	Argentaela Marmohec Wembrit Prostlon of Brittany Lotitia of Brittany Oreguen of Rennes

938–958	Roscille of Anjou Aremburge

958–1072	Ermengarde-Gerberga of Anjou Hawise of Normandy Bertha of Blois

House of Cornouaille

1072–1156	Constance of Normandy Ermengarde of Anjou Matilda FitzRoy

1156–1196	Margaret of Huntingdon

1221–1341	Blanche of Navarre Yolande of Dreux Isabella of Castile Joan of Savoy

1341–1365	Joanna of Flanders

1365–1514	Mary of Waltham Joan Holland Joan of Navarre Joan of France Isabella of Scotland Françoise d'Amboise Catherine of Luxembourg-Saint-Pol Margaret of Brittany Margaret of Foix

1514–1547	Catherine de' Medici