sentences:  His nephew Juan Vespucci inherited his famous uncle's maps, charts, and nautical instruments, and was appointed to Amerigo's former position as official Spanish government pilot at Seville.In 1524, Juan Vespucci was appointed Examiner of Pilots, replacing Sebastian Cabot who was then leading an expedition in Brazil.In the 1530s and 1540s, the principal mapmakers (known as "cosmographers") in the "Casa de Contratación" working on the Padrón General included Alonso de Santa Cruz, Sebastian Cabot, and Pedro de Medina.