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.

Good question. I also had to look this up while reading the novel. The historical references can be a bit confusing at first, but understanding who these characters are definitely makes the story much easier to follow.