Ridoredh of Vannes
Rivallo IV, Prince of Brittany, Earl of Poher, was a son of Saint Salomon, or Salaün, King of Brittany.
He had a son called Alan, Earl of Vannes, Prince of Brittany, who died around 907.
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Wikipedia
Rivallo IV, Prince of Brittany, Earl of Poher, was a son of Saint Salomon, or Salaün, King of Brittany.
He had a son called Alan, Earl of Vannes, Prince of Brittany, who died around 907.