Willem Janszoon Blaeu was born in 1571, Seventeen Provinces, and he died on 21st October 1638 (aged 67 years) in Amsterdam, Netherlands. Willem Janszoon Blaeu was a Dutch cartographer. He was the founder of a large publishing firm that became famous in the field of cartography under the name Blaeu. The first maps of Blaeu appeared in 1604. Later, he also started printing wall charts and large atlases. He invented mechanical devices for improving the technics of printing.
Do you know: As an astronomer, Willem Janszoon Blaeu made careful observations of a moon eclipse; he discovered a variable star now known as P Cygni, and carried out a measurement of a degree on the surface of the earth.
