Johannes Crastonis
Johannes Crastonis (Crastonus; Crastone) was an Italian renaissance humanist and scholar. Crastonus was probably born in Castel San Giovanni close to Piacenza. He was a member of the Carmelites. He studied in Constantinople but migrated to Modena (near Ferrara) in Italy. There he published a Greek-Latin dictionary c.1480 In Milan, together with Bonus Accursius he edited various works to facilitate the learning of Greek. His collaboration with Bonus Accursius started no later than 1478. Among these works were a bi-lingual Greek and Latin edition of the Psalms, dedicated to Ludovico Donà, published 21 September 1481. This  was the first printed version of the Greek Psalms. While at Milan, he was friends with Ermolao Barbaro, Francesco Filelfo, Giorgio Merula and Iacopo Antiquari. His "Vocabulista", a Greek-Latin dictionary, was first printed probably in Milan and then re-printed twice before 1500 by Dionysius Bertochus. A translation of Constantine Lascaris's "Erotemata" was published on 29 September 1480, which was reprinted in 1489. Crastonus died after 1497, as is clear from a reference made to him in that year.