Isle Phelipeaux

The island "Phelipeaux" is mentioned in the 1783 Treaty of Paris as a landmark defining the border between the United States and what would later become Canada.

[3][4] These four islands were described by priest and traveler Pierre François Xavier de Charlevoix, who named them in honor of his patron Louis Phélypeaux.

[9] "I. Philippeaux" is drawn with features resembling the actual Isle Royale, and may be an accidental duplication of it under the name given by Charlevoix.

[10] Northeast of Pontchartrain is "Isle Maurepas", which has been speculated to be either a duplication of Michipicoten (whose shape it resembles),[10][6] or a misrepresentation of the Slate Islands in the north of the lake (an area poorly represented by Bellin).

The islands appear essentially the same on the larger 1755 Mitchell Map of the colonies that would later comprise the United States of America, and surrounding territory.