If one asked the Port-Louisiens who is this Admiral Ronarc'h who gave his name to a street in the Kerzo district, many would undoubtedly answer that they do not know. Some would evoke the admiral who commanded the Fusiliers Marins on the "Dixmude" in 1914. But very few would give the correct answer, namely: Pierre Jean Ronarc'h, his nephew, first commander of the battleship "Jean Bart" and, as such, organizer and animator of the escape of the ship from Saint-Nazaire in…