Philippe Friedrich Dietrich 1790 to August 1792. At his home during a dinner in honor of the officers of the garrison of Strasbourg he asked the Captain Claude Joseph Rouget de Lisle, stationed in his city, to write the Song the Army of the Rhine, future "La Marseillaise". Rouget de l'Isle composed the song in the night of 24–25 April 1792. According to sources, Dietrich would have sung the song himself, accompanied on the piano by his wife, for he was very good musician. Baron Dietrich knew the Captain Rouget de l'Isle to be like him, a Freemason and attend the same Masonic
Juan Roget Rodez Cathedral in Aveyron and found that there was a "Roget" family of spectacle makers, leading him to conclude that the spectacle maker in the Sirtori story was Juan Roget. In 1979, Dr. Lopez Piñero in his book: "Ciencia y técnica en la sociedad española de los siglos XVI y XVII" explains that Simón de Guilleuma, solidly based on archival data, provided the documentary evidence that, before 1593, "long-range glasses" had been built in those workshops. In March of that year Pedro de Cardona, a prominent personality of the citizen oligarchy, and left among his assets a "long eyeglass decorated