House of Penthièvre

• Coat of Arms
• 

  House of Penthièvre
  Counts of Penthièvre, Goëlo, Nantes and Rennes
  Dukes of Brittany

• Cadet Branches
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  House of Avaugour
  Counts of Goëlo
  Lords of Avaugour

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  House of FitzHugh
  Lords of Ravensworth
  Barons FitzHugh

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  House of FitzAlan
  Lords of Bedale

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  House of FitzRanulph
  Lords of Middelham