Daniel is the eldest of the three brothers. After their father's death he turned his younger brother Pierre into his servant and treated him in a rude way. Later it was the reason for Daniel to call himself "the richest man" when wooing to Princess Rose.
Daniel seems to be the head of the family after his father's death, as the second son, Raymond, obeys him. Daniel is greedy and not quite honest as Pierre's part of the heritage was divided between the eldest brothers.