In 1479 or 1480, his son Diego Columbus was born. Between 1482 and 1485, Columbus traded along the coasts of West Africa, reaching the Portuguese trading post of Elmina at the Guinea coast (in present-day Ghana). Some records report that Filipa died sometime around 1485, while Columbus was away in Castile. He returned to Portugal to settle her estate and take his son Diego with him. He had left Portugal for Castile in 1485, where he found a mistress in 1487, a 20-year-old orphan named Beatriz Enríquez de Arana. It is likely that Beatriz met Columbus when he was in Córdoba, a gathering site of many Genoese merchants and where the court of the Catholic Monarchs was located at intervals. Beatriz, unmarried at the time, gave birth to Columbus's natural son Fernando Columbus in July 1488, named for the monarch of Aragón. Columbus recognized the boy as his offspring. Columbus entrusted his older, legitimate son Diego to take care of Beatriz and pay the pension set aside for her following his death, but Diego was negligent in his duties.