Johannes Trithemius, born Johann Heidenberg, was a German Benedictine abbot and a polymath who was active in the German Renaissance as a lexicographer, chronicler, cryptographer, and occultist. He is
Detail of Tomb Relief of Johannes Trithemius by Tilman Riemenschneider
Polygraphiae (1518) – the first printed book on cryptography
Tomb relief of Johannes Trithemius by Tilman Riemenschneider
Catalogus illustrium virorum Germaniae, 1495
Leon Battista Alberti was an Italian Renaissance humanist author, artist, architect, poet, priest, linguist, philosopher, and cryptographer; he epitomised the nature of those identified now as polymat
Johannes Trithemius
…Renaissance as a lexicographer, chronicler, cryptographer, and occultist. He is considered the founder of modern cryptography (a claim shared with Leon Battista Alberti) and steganography, as well as the founder of bibliography and literary studies as branches of knowledge. He had considerable influence on the development…
Presumed self-portrait of Alberti
A portrait of Alberti by Filippino Lippi is thought to exist in the Brancacci Chapel, as part of Lippi's completion of the Masaccio painting, the Raising of the Son of Theophilus and St. Peter Enthroned.
English title page of the first edition of Giacomo Leoni's translation of Alberti's De Re Aedificatoria (1452); the book is bilingual, with the Italian version being printed on the left and the English version printed on the right.