[[File:Guillaume Brouscon. World chart, which includes America and a large Terra Java (Australia). HM 46. PORTOLAN ATLAS and NAUTICAL ALMANAC. France, 1543.jpg|thumb|A [[Ancient world maps|world map]] by Guillaume Brouscon, an example of a [[Dieppe maps|Dieppe map]], 1543.]] [[File:Brouscon Almanach 1546 Compass bearing of high waters in the Bay of Biscay left Brittany to Dover right.jpg|thumb|Brouscon's Almanach of 1546: Compass bearing of high waters in the [[Bay of Biscay]] (left) and the coast from [[Brittany]] to [[Dover]] (right).]] [[File:Brouscon Almanach 1546 Tidal diagrams according to the age of the Moon.jpg|thumb|Brouscon's Almanach of 1546: Tidal diagrams "according to the age of the Moon".]] '''Guillaume Brouscon''' was a Breton [[cartographer]] of the [[Dieppe school]] in the 16th century.<ref>Roger Hervé, ''Le pilote et cartographe Guillaume Brouscon, du Conquet vers 1540-1550,'' 1984; Hubert Michéa, ''Les cartographes du Conquet et le début de l'imprimerie. Guillaume Brouscon, une vie pleine de mystère,'' Société archéologique du Finistère, 1986; Hubert Michea "Le cartographe conquetois Guillaume Brouscon et la géopolitique: 1543-1548", Comité des Travaux Historiques et Scientifiques, Section d'Histoire des Sciences et des Techniques, ''Lyon, Cité de Savants,'' Paris, Editions du CTHS, 1988.</ref> He was from the port of [[Le Conquet]], near [[Brest, France|Brest]],<ref name="Cartwirght">[https://books.google.com/books?id=78bE5U7TVuIC&pg=PA18 ''Tides: a scientific history'' David Edgar Cartwright p.18]</ref> which is shown prominently in large red lettering on his 1543 map of the world.
On his 1543 map of the world, the northern part of the promontory of the ''TERRE OSTRALE'' (Australe) is called ''terre de Lucac'' (the Land of Locach), and is separated from ''[[Jave la Grande|La Iave grande]]'' and ''[[Java|Iave]]'' by the ''R. grande.'' That is, Brouscon, like [[Gerardus Mercator|Mercator]], identified [[Oronce Finé|Fine]]'s ''[[Regio Patalis]]'' not with Java Major but with [[Locach]].<ref> Robert J. King, "Finding Marco Polo's Locach", ''Terrae Incognitae,'' vol.50, no.1, April 2018, pp.1-18, p.8.</ref>
He published his Brouscon's [[Almanac]]hs in 1546, which were used for their information on [[tides]] by English, French and Breton sailors. They allowed to known the direction of tidal currents, and to calculate tide level depending on the phase of the [[moon]].<ref name="Cartwirght"/>
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{{DEFAULTSORT:Brouscon, Guillaume}} [[Category:People from Le Conquet]] [[Category:People from the Province of Brittany]] [[Category:16th-century French cartographers]] [[Category:16th-century Breton people]]