Mauclerc, Pierre
Mauclerc, Pierre:
see Peter IPeter I(Pierre Mauclerc), d. 1250, duke or count of Brittany (1213–37). The son of Robert II, count of Dreux, he married Alix, half-sister and heiress of Arthur I duke of Brittany.
..... Click the link for more information. , duke of Brittany.