Complex sentence: Federico di Sanseverino was born in Naples in 1475 or 1477, the son of Roberto Sanseverino d'Aragona, general of the papal army, and his second wife Elisabetta da Montefeltro.
Split into simpler sentences: Federico di Sanseverino was born in Naples in 1475 or 1477. He was the son of Roberto Sanseverino d'Aragona, a general of the papal army, and his second wife Elisabetta da Montefeltro.