It is thought that Jehuda Cresques, son of Jewish cartographer Abraham Cresques of Palma in Majorca, and Italian-Majorcan Angelino Dulcert were cartographers at the service of Prince Henry. Majorca had many skilled Jewish cartographers. However, the oldest signed Portuguese sea chart is a Portolan made by Pedro Reinel in 1485 representing the Western Europe and parts of Africa, reflecting the explorations made by Diogo Cão. Reinel was also author of the first nautical chart known with an indication of latitudes in 1504 and the first representation of a wind rose.