skos:altLabel | - his father
- Duc de Blacas
- Duke of Blacas
- 1st Duke of Blacas
- Pierre Louis<br>Jean Casimir<br>de Blacas<br>d'Aulps
- Comte de Blacas
- Count of Blacas
- Duke de Blacas
- Pierre Blacas d'Aulps
- Pierre Louis Jean Casimir Duc de Blacas
- Pierre-Louis de Blacas d'Aulps
- Pierre-Louis de Blacas d'Aulps, 1st Duke of Blacas
- Pierre-Louis,<br>'''Count of Blacas'''
- Pierre-Louis de Blacas d'Aulps, Count and later 1st Duke of Blacas, Peer of France
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