Guillaume Delahaye (1725 - 1802) was the most prolific member of the Delahaye (De-La-Haye) family of engravers active in Paris throughout the 18th century. The Delahaye family engraved for many of the great cartographers of 18th century Paris, including D'Anville and Vaugondy. Guillaume also worked with foreign cartographers such as Tomas Lopez of Madrid. Possibly Delahaye's most significant map is A Map of the Country between Albemarle Sound and Lake Erie prepared for the memoires of Thomas Jefferson. Delahaye was succeeded by his daughter, E. Haussard.