Colonel Joseph Frederick Wallet Des Barres (22 November 1721 – 27 October 1824 (or 24 October 1824)) was a cartographer who served in the Seven Years' War, in part, as the aide-de-camp to General James Wolfe. He also created the monumental four volume Atlantic Neptune, which was the most important collection of maps, charts and views of North America published in the eighteenth century. Finally, he was the Governor of Cape Breton Island and Prince Edward Island. Colonel Des Barres is buried with his wife in the crypt of St. George's (Round) Church, Halifax, Nova Scotia.
Des Barres, who is seen as having lived through important changes in Nova Scotia's history, is thought to have been born in Basel, Switzerland, and was a member of a Huguenot family. His parents were Joseph-Leonard Vallet Des Barres and Anne-Catherine Cuvier and he was the eldest of their three children. Des Barres read mathematics and art at the University of Basel, studying under John and Daniel Bernoulli. Upon the completion of his studies he left for England. There he enrolled at the Royal Military Academy, Woolwich. It was there that Des Barres trained to become a military officer, and studied military surveying. His training would also benefit him later in life for surveying, map making, and coastal charting. In 1756 he was commissioned into the Royal Americans (the 62nd Foot later known as the 60th Foot).
In 1756 Des Barres sailed to North America and was with Edward Boscawen's fleet when it attacked the Fortress of Louisbourg in 1758. He distinguished himself by capturing a French entrenchment at Kennington Cove. Soon he was put to work charting the Gulf of St. Lawrence and the approaches to Quebec, information that would be used the following year in Wolfs's assault on the City of Quebec. In 1760 he was at Halifax to prepare plans for the city's defences and naval yard.