This is an incomplete list of some Breton people of note and of some notable individuals born in Brittany, alphabetically within categories. Brittany (Breizh in Breton) is a Celtic nation of northwestern France and has contributed famous names to all walks of life.
The Red Lady of Brittany, composer of the Lay of the Beach, an instrumental and vocal celebration of William the Conqueror’s vacation at Barfleur circa 1078 which was popular in the Norwegian royal court around the year 1200[1]
Jeanne de Clisson, ‘Lioness of Brittany’, who conducted naval action against French ships and ports in revenge for her husband's execution
Riothamus, ‘King of the Britons’, an ally of the Roman emperor Anthemius and a correspondent with Sidonius Apollinaris; a possible inspiration for some of the stories about ‘King Arthur’
Conan II, Duke of Brittany, son of Alan III, powerful rival to both Odo of Penthièvre and William the Conqueror, overran northern Anjou immediately before his death (allegedly by poisoning)
Hoël II, Duke of Brittany, technically Duke Consort and then Regent for his son Alan IV; also known as Hoël V, Count of Cornouaille
Robert fitz Wymarc, a Staller for Edward the Confessor and present at Edward's death bed; related to King Edward, William the Conqueror and Odo of Penthièvre; advised William the Conqueror to return to Normandy as his force was no match for Harold Godwinson’s army
Alfred of Lincoln, a Domesday tenant-in-chief; probably married a daughter of William Malet