Which horologist who served members of European nobility employed members of the Oudin family?
Charles Oudin:  Several members of the Oudin family worked for the master watch and clockmaker Abraham-Louis Breguet. Abraham-Louis Breguet:  In his lifetime he was considered the leading watchmaker of his day, and he built up a clientele that included many leading public figures and members of the European nobility.
Abraham-Louis Breguet