The former Breton and French Catholic Diocese of Saint-Malo existed from at least the 7th century until the French Revolution. Its seat was at Aleth until the 12th century, when it was moved to Saint-

Nominoe or Nomenoe was the first Duke of Brittany from 846 to his death. He is the Breton pater patriae and to Breton nationalists he is known as Tad ar Vro.