Guiljelmus Blaeu ( 1600 - 1699 ) was a Dutch painter. Guiljelmus Blaeu s works have been put up for auction numerous times, with realized prices varying from 119.89 USD for Zeelandia Comitatus in 2005 to 140.63 USD for Freti Magellanici in 2010 , based on the size and medium of the artwork.