Giovanni da Carignano


Giovanni da Carignano, or Johannes de Mauro de Carignano was a priest and a pioneering cartographer from Genoa.
There is little certain information about his life. There is a Genoese document referring to a certain Giovanni, son of Mauro, from Carignano. Other fragments suggest he had two brothers, Giacomo a notary, and Anselmo a doctor. Further documents suggest he was still alive in September 1329, but dead by May, 1330.
From 1293 to 1329, Giovanni da Carignano was the rector of the church of San Marco al Molo, a parish in Genoa, just a few meters away from the bustling port of Genoa, arguably the most important seaport in the Mediterranean Sea at the time.
Carignano is important to the history of cartography as the author of an early 14th-century nautical portolan chart, depicting, with much skill, most of the world as then known to his Italian contemporaries. If the earlier dates are accepted, then it might be the first known portolan signed by its author. The signature read: Presbiter Johannes Rector sancti Marci de portu Ianue me fecit.
The Carignano chart was long held by the Archivio di Stato in Florence, Italy. Alas, already fragile, the chart was destroyed in 1943 during a bombing of Naples, where it was temporarily on exposition. All that remains of it are a set of photographs and notes by earlier scholars.
A second mysterious Carignano map, dated 1306, is mentioned routinely in 19th-century lists, but without indication of its location or description of its content, and thus either never existed beyond rumor, or has long been lost.
In this map he joins the teological tradition and the more accurate and up-to-date information
In the port of Genoa he interviewed the ambassadors of abissinan negus Wedem Arad; some scholars, as Silverberg, presume he was the first European to collocate the legendary Prester John's Kingdom in Africa rather than in northern Asia.