Who is Captain Montmorin from Sharpe's Trafalgar: Richard Sharpe and the Battle of Trafalgar, October 21, 1805 and what is their importance?

Captain Montmorin is the Captain of the Revenant. He is French, and he takes part in the battle at Trafalgar. Montmorin is described as an honorable man, who accepts defeat at the hands of Joel Chase and the crew of the Pucelle.