Duccius[?] - inscriptions, notably a tombstone of Lucius Duccius Rufinus at York[2] (http://museums.ncl.ac.uk/archive/arma/contents/iconog/tombston/cent1/uk/york/duccius.htm)
... Magellan
Diego Cao, (died c. 1486), explored the African west coast
Jacques Cartier, (1491-1557), discovered the St. Lawrence River and sailed up it to Montreal; failed ...