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)
... del Cano[?] - completed the first circumnavigation, started by Magellan
Diego Cao, (died c. 1486), explored the African west coast
Jacques Cartier, (1491-1557), ...