In May 1555, a broadsheet was produced in Rome depicting the torture and execution in London and York of the Carthusians of the Charterhouses of London, Axeholme, Beauvale and Sheen during the reign of Henry VIII. This single-page martyrology provides the basis for an in-depth exploration of several interconnected artistic, scientific and scholarly communities active in Rome in 1555 which are identified as having being involved in its production. Their work and concerns, which reflect their time and intellectual environment, are deeply embedded in the broadsheet, especially those occupying...