View source for Calom, Jacob Aertz (1599-1678)

Jacob Aertz Calom (or Colom), b. 10 October 1599 at [[Dordrecht (Zuid-Holland, Netherlands)|Dordrecht]], d. 10 May 1678 at [[Amsterdam (Noord-Holland, Netherlands)|Amsterdam]], was baptized in the Amsterdam [[Waterlanders|Waterlander]] congregation, 25 September 1622, and remained a member of this congregation until his death. He was a bookseller and published among others a large number of Mennonite books. In the dispute in the Waterlander congregation about the charge of [[Socinianism|Socinianism]] made against [[Obbes, Nittert (ca. 1581-ca. 1636)|Nittert Obbes]], Calom published a pamphlet in Obbes' defense, titled <em>Antwoord op seeckere drie vragen, </em>of which he was probably the author. At least one of his daughters was a member of the Waterlander congregation, but all of his sons joined the Reformed Church.

Calom was very expert in matters of mathematics and navigation; he wrote various cartographic books, and besides these technical works: <em>Troost der Zeevaart </em>(Comfort of Navigation) (Amsterdam, 1651) and <em>Onderrigting in de Konst der Zeevaart </em>(Instruction in the Art of Navigation). vdZ.
= Bibliography =
<em>Catalogus der werken over de Doopsgezinden en hunne geschiedenis aanwezig in de bibliotheek der Vereenigde Doopsgezinde Gemeente to Amsterdam. Amsterdam: </em> J.J. de Bussy, 1919: 105.

<em>Jaarboek Amstelodamum </em>25 (1928): 85-88.

Visscher, H. and L. A. van Langeraad.<em> Biographisch Woordenboek von Protestantsche Godgeleerden in Nederland, </em>A-L (I, Utrecht), later by J. P. de Bie and J. Loosjes (II, III, IV, V, and installment #29, The Hague, 1903-    .): III, 193.
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