'Balthazar'
'Balthazar' or 'Balthasar' is an unusual name in French, as in English. Perhaps the best known person bearing this name is the painter Balthasar Klossowski, better known as 'Balthus'. I notice that his brother, Pierre Klossowski, played the part of the old miser in the film. I wonder if this is pure coincidence or not? (One could add that the old miser's interest in a rather young girl might be said to resemble Balthus's interest in rather young girls.)
"I beseech ye in the bowels of Christ, think that ye may be mistaken."