Bernardo Monanni, Secretary of the Florentine Embassy in Madrid, called this painting The Relief of the Three Cities on the Rhine by the Duke of Feria. He was undoubtedly influenced by the inscription on the lower right corner, which mentions not only Rheinfelden, but also three other neighboring cities: Waldzut, Sechim (Säckingen) and Laufenburg. The duke appears in the foreground, standing