Complex sentence: Dom Francisco Manuel de Mello (November 23,1608--August 24,1666), Portuguese writer, a connection on his father's side of the royal house of Braganza, was a native of Lisbon.
Split into simpler sentences: Dom Francisco Manuel de Mello (November 23,1608--August 24,1666), was a Portuguese writer. De Mello, a connection on his father's side of the royal house of Braganza, was a native of Lisbon.