Johann Cloppenburg

[2] He was born in Amsterdam, and studied at the University of Leiden, where he made a lifelong friendship with Gisbertus Voetius.

[3] With Voetius he opposed the appointment of Conrad Vorstius at Leiden, after the death of Jacobus Arminius.

[3] One journey in 1615 took him from Saumur to Basel, with a manuscript of Philippe de Mornay based on the Pugio Fidei of Ramón Martí.

[11] He moved to the University of Franeker in the province of Fryslan, where Johannes Cocceius had arrived shortly before.

[12][13] His Theologica opera omnia were published in 1684;[25] the editor Johannes à Marck was his grandson.

Johann Cloppenburg, 1644 engraving by Cornelis van Dalen .
De foenore et usuris brevis institutio , 1640
Title page from Kort begrijp van de opkomste ende leere der Socinianen (1652).