Complex sentence: He was born at Naples into one of the city's most ancient and distinguished families, a younger son of Giovanni Alfonso Carafa, count of Montorio, and his countess, Caterina Cantelma.
Split into simpler sentences: He was born at Naples into one of the city's most ancient and distinguished families. His father was Giovanni Alfonso Carafa, count of Montorio, and his mother Caterina Cantelma.