↑ This was the date of the Battle of Trans-la-Fôret
↑ The year the titles of King of France and Duke of Brittany were joined in one ruler, Henry II of France
↑ The creation of regions in modern France occurred pursuant to the Law of Decentralisation (2 March 1982)
↑ Mid-20th-century historians Ferdinand Lot and Nora Kershaw Chadwick argued that this had occurred in response to hostile raids into Britain. But late 20th-century historians, including Patrick Galliou and Michael Jones, have emphasised the paucity of evidence supporting this analysis.[6]
↑ Brittany was free of any royal French influence until 1123, when Louis VI of France confirmed the bishop of Nantes. See Jones, 1988, page 4.
