Skip to content
Little girl looking Dear readers, Catholic Online was de-platformed by Shopify for our pro-life beliefs. They shut down our Catholic Online, Catholic Online School, Prayer Candles, and Catholic Online Learning Resources—essential faith tools serving over 1.4 million students and millions of families worldwide. Our founders, now in their 70's, just gave their entire life savings to protect this mission. But fewer than 2% of readers donate. If everyone gave just $5, the cost of a coffee, we could rebuild stronger and keep Catholic education free for all. Stand with us in faith. Thank you. Help Now >

Justus Baronius Calvinus

Free World Class Education
FREE Catholic Classes

A convert and apologist, b. at Kanthen, Germany, c. 1570; d. after 1606. He was born of Calvinist parents and educated at Heidelberg where he took a course in theology. His study of the Fathers inclined him towards Catholicism and finally led him to Rome where he was kindly received by Cardinals Bellarmin and Baronius and by Pope Clement VIII. The writings of Bellarmin strengthened his conviction regarding the Church, and his gratitude to Baronius caused him to add that cardinal's name to his own. On his return to Germany he became a Catholic (1601) and a staunch defender of the Faith. In his "Apologia" (Mainz, 1601) he gives the reasons for his conversion and in his "Praescriptionum adversus haereticos . . . Tractatus" (ibid. 1602, 1756) he appeals to the Fathers in support of the truth of Catholicism.

Join the Movement
When you sign up below, you don't just join an email list - you're joining an entire movement for Free world class Catholic education.

Catholic Online Logo

Copyright 2024 Catholic Online. All materials contained on this site, whether written, audible or visual are the exclusive property of Catholic Online and are protected under U.S. and International copyright laws, © Copyright 2024 Catholic Online. Any unauthorized use, without prior written consent of Catholic Online is strictly forbidden and prohibited.

Catholic Online is a Project of Your Catholic Voice Foundation, a Not-for-Profit Corporation. Your Catholic Voice Foundation has been granted a recognition of tax exemption under Section 501(c)(3) of the Internal Revenue Code. Federal Tax Identification Number: 81-0596847. Your gift is tax-deductible as allowed by law.