The work of antiquarian and medallist Antoine Morillon is discussed. The writer explains that Morrillon is thought to be unique in the 16th century as both a scholar who collected texts of inscriptions and an artist who engraved dies for medals, as well as being a lexicographer and an expert on medicinal plants. He describes what can be known about Morillon's main areas of activity, including the beginning of his interest in manuscripts, the role he played in antiquarian circles in Rome in the 1550s, and his dies for medals with classical subjects. He notes that Morillon's Adversaria Antonii Morillonii has been wrongly identified as a “calepin de voyage,” and that it is clear from what was recorded of the manuscript before its destruction in World War II that it was concerned with the meanings of words and etymologies rather than being a “calepin de voyages” in any sense. He goes on to show, however, that what is perhaps part of a “calepin de voyages” by Morillon is preserved in the material.