Willem Janszoon Blaeu

Willem Janszoon Blaeu
Willem Janszoon Blaeu by Jeremias Falck
Born	1571 Holland, Seventeen Provinces
Died	21 October 1638 (age 67) Amsterdam, Holland, Dutch Republic
Nationality	Dutch
Occupation	Cartographer, atlas maker, publisher

Willem Janszoon Blaeu (Dutch pronunciation: [ˈʋɪləm ˈjɑnsoːm ˈblʌu]; 1571 – 21 October 1638), also abbreviated to Willem Jansz. Blaeu, was a Dutch cartographer, atlas maker and publisher. He was one of the notable representatives of the Netherlandish/Dutch school of cartography in its golden age (the 16th and 17th centuries).

Blaeu was born at Uitgeest or Alkmaar. As the son of a well-to-do herring salesman, he was destined to succeed his father in the trade, but his interests lay more in mathematics and astronomy. Between 1594 and 1596, as a student of the Danish astronomer Tycho Brahe, he qualified as an instrument and globe maker. In 1600 he discovered the second ever variable star, now known as P Cygni.

Once he returned to Holland, he made country maps and world globes, and as he possessed his own printing works, he was able to regularly produce country maps in an atlas format, some of which appeared in the Atlas Novus published in 1635. In 1633 he was appointed map-maker of the Dutch East India Company. He was also an editor and published works of Willebrord Snell, Descartes, Adriaan Metius, Roemer Visscher, Gerhard Johann Vossius, Barlaeus, Hugo Grotius, Vondel and the historian and poet Pieter Corneliszoon Hooft. He died in Amsterdam.