Descendents
His son, Gerard van Keulen (1678–1726), continued his work and produced new editions of the various volumes. Grandson Johannes II van Keulen (1704–1755) published a new edition of the volume with maps of Asian waters, first published in 1755. Great-grandson Gerard Hulst van Keulen (1733–1801) occupied himself with the last editions of the Zee-Fakkel.
Read more about this topic: Johannes Van Keulen