He had business connections with the Swiss watchmaker Pierre Jaquet-Droz and Jean-Frédéric Leschot.
Pierre Boulez | Pierre Trudeau | Pierre-Auguste Renoir | Pierre Corneille | Jean-Pierre Rampal | Pierre Loti | Pierre | Pierre Teilhard de Chardin | Jean-Pierre Thiollet | Pierre Puvis de Chavannes | Pierre Cardin | Pierre Bourdieu | Pierre Amoyal | Pierre Huyghe | Pierre Bonnard | Pierre-Constant Budin | Pierre-Joseph Proudhon | Pierre Beaumarchais | Pierre Restany | Pierre Curie | Pierre Louÿs | Pierre Bayle | Marco Pierre White | Jean-Pierre Ponnelle | Jean-Pierre Jeunet | Saint-Pierre, Martinique | Saint-Pierre | Pierre Monteux | Pierre Gassendi | Pierre Clémenti |
Numa Droz (27 January 1844 – 15 December 1899), a Swiss politician
He did however come into conflict with the party leader Jules Humbert-Droz.