Who are Corneille Breille, Duke of Anse?

Corneille Breille is Henri Christophe's priest. When he plans to go back to France, knowing the king's sins, the king has him imprisoned in the Archbishop's Palace, where he eerie cries can be heard throughout the Cap. After Corneille Breille dies, he appears in church to Henri Christophe, causing the monarch's temporary paralysis.