Person

Arthur I, Duke of Brittany

1187–c. 1203 · 12th century · Also known as Arthur of Brittany

Arthur of Brittany was the posthumous son of Geoffrey, son of Henry II of England, and Constance, duchess of Brittany. On the death of Richard I in 1199 he claimed the Angevin inheritance against his uncle John, with the support of Philip II of France. Captured by John at Mirebeau in 1202, he disappeared in custody in 1203 and was widely believed to have been murdered.

Arthur I, Duke of Brittany
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Mentioned in 2 profiles

Duchy of NormandyDeclineDuchy of BrittanyGovernance

See also

Cite this entry
APA
The Epoch Institute. (2026). Arthur I, Duke of Brittany. In The Epoch Institute Encyclopedia. https://the-epoch-institute.org/encyclopedia/arthur-i-duke-of-brittany
MLA
“Arthur I, Duke of Brittany.” The Epoch Institute Encyclopedia, The Epoch Institute, 2026, https://the-epoch-institute.org/encyclopedia/arthur-i-duke-of-brittany. Accessed .
Chicago
The Epoch Institute. “Arthur I, Duke of Brittany.” The Epoch Institute Encyclopedia. 2026. https://the-epoch-institute.org/encyclopedia/arthur-i-duke-of-brittany.
Harvard
The Epoch Institute (2026) ‘Arthur I, Duke of Brittany’, The Epoch Institute Encyclopedia. Available at: https://the-epoch-institute.org/encyclopedia/arthur-i-duke-of-brittany (Accessed: ).

Last reviewed October 2026Random entry ↻