In October 1519, he succeeded Adrianus Barlandus as Latin teacher at the Collegium Trilingue, where he taught Jacob Cruucke and Andreas Masius who would later become notable humanists in their own right.
[7] In April 1525 he was appointed canon of the Cathedral of Our Lady in Antwerp (through jus nominationis granted by Pope Leo X in the liberal arts faculty of Leuven), but the nomination was contested, and a very long trial followed.
In July 1536, he assumed provisional leadership of the Collegium Trilingual after the death of its chairman Joost van der Hoeven.
Goclenius enjoyed considerable reputation in his time: in his lifetime he was proposed to succeed Juan Luis Vives at Corpus Christi College, Oxford, but ultimately remained in Leuven until his death.
Goclenius died of bronchitis, and his successor Petrus Nannius delivered his eulogy (Funebris oratio habita pro mortuo Conrado Goclenio).
He wrote a Latin version of the Hermotimus, sive De sectis philosophorum of Lucian, dedicated to Thomas More (Louvain, D. Martens, 1522), for which More gave him a gilded cup full of gold pieces.
[8] Then he jointly wrote, with Erasmus, an edition of philosophical dialogues of Cicero: M. Tullii Ciceronis Officiorum libri III.