skos:altLabel | - 1st
- Peter
- Pierre
- Duke of Brittany
- Peter I
- Pierre of Dreux
- Duke Peter I
- Peter I of Brittany
- Peter I<br/>Mauclerc
- Peter Mauclerc
- Peter Maulcerc
- Peter de Dreux, Duke of Brittany
- Peter of Brittany
- Peter of Dreux
- Peter Ι
- Peter_I,_Duke_of_Brittany
- Pierre I of Brittany
- Pierre Mauclerc
- Pierre Mauclerc, Peter I, Duke of Brittany
- Pierre de Dreux
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