 He presumably made his world map there in 1507, appears on payrolls in 1508 and 1509 and seems to have specialized in decorative painting.He is thought to be the “Fleming called John”, a close friend of Raphael who at one point resided with him.It has been suggested that he assisted and advised Raphael on his 1509-1510 “Astronomia” and other frescoes in the Stanza della segnatura.