Watches carrying the signature "Goullons AParis" are preserved in several museums and private collections; They all date between 1630 and 1660 or thereabouts and are characterised by the quality of their decoration and the care taken over their movements. The aim of this study is to give some details about their maker Jacques Goullons, an Huguenot master clockmaker working in Paris. His life was full, occupied by his activity as clockmaker and tradesman in his shop in the courtyard of the Palace, by his family through three marriages, and by his network of friends in the community of Calvinist craftsmen and artists, all which activities are revealed by new archival documents. The article presents, for the first time, a corpus of surviving watches by Jacques Goullons, chiefly enamelled watches.