Important early map of the Straits of Magellan and the Straits of Le Maire, the latter of which was first discovered by Jacob Le Maire and Willem Schoten only 30 years prior to the publication of the first edition of this map by Dudley in 1646.
The chart provides remarkable detail, including information which would have come to Dudley relatively shortly after Le Maire and Schoten's voyage became publicly known. The map retains the Unknown Southern Continent, which is shown in the lower left portion of the map, based upon the description provided by Sir Francis Drake.
The chart appeared in Dudley's Arcano del Mare, one of the rarest and most highly sought after sea atlases of the 17th Century. Dudley, an Englishman, produced this exquisite work while living in Florence. Dudley, who was believed to have received some of his information directly from Sir Francis Drake, labored for decades before finally releasing the first edition of this work when he was 73 years old. Dudley's atlas is of the utmost importance, being the first Sea Atlas published by and Englishman and the first Sea Atlas to treat the entire world (not just Europe). It is also the first atlas to utilize the Mercator Projection on a uniform basis and included significant advances in "Great Circle" navigation (shortest circle around the Globe). Its inclusion of winds and currents was also a monumental first. Completed in Manuscript form in 1636, it is among the most important works in the history of European Cartography.
Robert Dudley (1574 - 1649) was the illegitimate son of Robert Dudley, 1st Earl of Leicester. In 1594, Dudley led an expedition to the West Indies, of which he wrote an account. In 1605 ,he tried unsuccessfully to establish his legitimacy in court. After that he left England and converted to Catholicism, taking up residence in Florence where he served the Grand Dukes of Tuscany in their efforts to rid the Mediterranean of Piracy. There he worked as a noted shipbuilder and designed and published Dell'Arcano del Mare, the first maritime atlas to cover the whole world. He was also a skilled navigator, mathematician and engineer. In Italy, he styled himself Earl of Warwick and Leicester as well as Duke of Northumberland. He was a friend of Sir Francis Drake and relative of Thomas Cavendish, both of whom corresponded with Dudley and likely supplied some of the information for his Atlas.
Robert Dudley (1574-1649) is one of the most intriguing historical figures of the late Elizabethan period. His father, also named Robert and the first Earl of Leicester, was a favorite of Elizabeth I’s. The Earl was a supporter of exploratory expeditions and backed Francis Drake on his circumnavigation (1577-1580) and Martin Frobisher on his 1576 voyage to find the Northwest Passage. Robert the Younger was the illegitimate son of the Earl and Lady Douglas Sheffield, born in 1574.
Dudley’s Arcano del Mare (Mystery of the Sea) is one of the most important atlases ever produced and one of the most complex. It is the first sea-atlas of the whole world; the first with all the charts constructed using Mercator's new projection, as corrected by Edward Wright; the first to give magnetic declination; the first to give prevailing winds and currents; the first to expound the advantages of Great Circle Sailing; and the first sea-atlas to be compiled by an Englishman, albeit abroad in Italy. Dudley broke completely with the contemporary style of charts. He showed lines of latitude and longitude and omitted all compass lines. In doing so, his purpose was more intellectual than practical: techniques for determining longitude at sea were not refined until more than two centuries later. The maps are by English and other pilots and it is generally accepted that the work was both scientific and accurate for the time. Dudley used the original charts of Henry Hudson, and for the Pacific Coast of America used Cavendish's observations.
Provenance: Bonhams, London; offered in partnership with Barry L. Ruderman, California.