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Willem Janszoon Blaeu was a Dutch cartographer and map publisher.
Willem studied astronomy and cartography under the Danish astronomer Tycho Brahe and even discovered the variable star P Swan in 1600. A little later Blaeu settled in Amsterdam, where he began making globes and also began producing land and sea maps, including a 1605 world map. In 1629 he managed to acquire the printing plates of the cartographer Jodok Hondius, with which he published his own atlas.
In 1633, Willem Blaeu was appointed cartographer of the Dutch Republic, as well as the official cartographer of the Dutch East India Company. Blau built up a large collection of maps and conducted an extensive publishing business. After Willem's death, his sons Jan Blaeu (1596-1673) and Cornelius Blaeu successfully continued his work. But in 1672, during a fire in Amsterdam, Blaeu's workshop was destroyed, and the company founded by Willem Blaeu ceased to exist in 1698.
![[FOSTER, George (fl. 1735-1740)] – Robert SAYER (1735-1794).](/assets/image/picture_4361590/74b5a/13dca103bbf8f022f3e8439e6036e3811733871600jpg__fix_374_244.jpeg)
![[FOSTER, George (fl. 1735-1740)] – Robert SAYER (1735-1794).](https://veryimportantlot.com/assets/image/picture_4361590/74b5a/13dca103bbf8f022f3e8439e6036e3811733871600jpg__fix_374_244.jpeg)
