Aldroen (Aldrien or Audren or Aldor in Gaulish) (393 – 464)[1] was a legendary king of the Bretons of Armorica.
Aldroen appears in Geoffrey of Monmouth's 12th-century Historia regum Britanniae as Aldroenus, the "fourth king after Conan" to rule over Brittany.
According to tradition, he took up arms against the Romans and drove them out of Nantes, Guérande, Saint-Malo and Léon, and then advanced into the Orléanais.
He married an Irish princess and the historian Pierre-Hyacinthe Morice de Beaubois (Dom Morice) recorded as his children:[4] The Cambrian or second Meigant was son of Gwyndaf hen, son of Emyr Llydaw (i.e., Ambrose of Letavia, or Armorica), the nephew of St. German, Bishop of Man, by his sister, the wife of Aldor, or Aldroen, King of Armorica.
[6]In a more recent work Stéphane Morin challenges the role attributed by tradition to Aldroen of founder of the city of Châtelaudren: Whatever the ancient chroniclers of the late Middle Ages say, the supposed foundation of Châtelaudren in the 5th century by King Audren, a reputed descendant and 3rd successor of Conan Meriadoc, seems to have to be relegated to the rank of legend.