In 1632 Lobkowitz was sent to the Low Countries where he became a renowned preacher and missionary. His first book "Steganographia ars orthographia" was published in 1636 in Brussels when he was a professor at the Leuven University – the same city where Jan Baptist Zangrius was also active. Here Lobkowitz published a major work titled "Theologia Moralis ad prima, eaque clarissima principia reducta" printed by Perus Zangrius (Lovanii, typis ac sumptibus Petrus Zangrius, 1645). His book titled "Philippus Prudens" containing some hatched arms was published in 1639 by Balthasar Moretus in Antwerp. The coats of arms were engraved by Cornelis Galle the Younger, after the drawings of Erasmus Quellinus the Younger (Antwerp, 1607 - Antwerp, 1678), a Flemish Baroque painter, and the engraving of the frontispiece was made by Jacob Neefs (Antwerp, June 3, 1610 – 1660), also after a design by Erasmus Quellinus the Younger.