Enzinas was sent to the Low Countries around 1536 for commercial training, but on 4 June 1539 he enrolled at the Collegium Trilingue of Louvain. There he fell under the spell of humanist scholarship as popularized by Desiderius Erasmus. Around that time he developed an acquaintance with the Polish Reformer Jan Łaski. ("Epistolario", letter 1.) He also made a connection with the University of Oxford, as shown by a letter he wrote to a certain Edmund Crispin of Oriel College, later published by the martyrologist John Foxe in the first edition of his "Acts and Monuments". (Pratt ed. (1870), v6, p139, n1.) The same work, more popularly known as "Foxe's Book of Martyrs", also contains eyewitness accounts originally penned by Enzinas.