In this essay I have gathered together in chronological order all the maps produced in the Seventeenth Century that I could find in a year of searching that showed the existence – or not – of Ile Saint Jean. Because of its location, size and extensive sand banks on the side that faced the centre of fishing activity in the Gulf of Saint Lawrence, it seems not to have been of any interest to France, or other European powers concerned with the extensive exploitation of the fisheries of New France. In my last post, based on very early portolans, I suggested that there was an island called Saint Jean somewhere…