COVENS, J. / MORTIER, C. - Carte de la Barbarie de la Nigritie et de la Guinée..

Showing the imaginary island of ''Borondon'' or Saint Brendan's Island, also known as Saint Brendan's Isle, supposedly situated in the North Atlantic somewhere west of Northern Africa. It is named after Saint Brendan of Clonfert. He and his followers are said to have discovered it while travelling across the ocean and evangelising its islands. It appeared on numerous maps in Christopher Columbus's time up to the 18th century.
Richly engraved map of North and West Africa, based upon the earlier maps of De L'Isle. Richly annotated throughout and with excellent regional detail. It includes the Canary Islands, the Cape Verde Islands and the Azores.

The map is from a Dutch edition of De L'Isle's work entitled, Atlas Nouveau, Contenant Toutes Les Parties Du Monde, Ou sont exactement Remarquées les Empires, Monarchies, Royaumes, Etats, Republiques &c. Par Guillaume de l'Isle. Premier Géographe de sa Majesté.
Published by Covens and Mortier, brothers-in-law who continued the firm established by Pierre Mortier.