Complex sentence: Giacomo II Crispo (or Jacopo) (1426--1447) was the thirteenth Duke of the Archipelago, etc., from 1433 to 1447, son of twelfth Duke John II Crispo and wife "Nobil Donna" Francesca Morosini, Patrizia Veneta.
Split into simpler sentences: Giacomo II Crispo (or Jacopo) (1426--1447) was the thirteenth Duke of the Archipelago, etc., from 1433 to 1447. He was the son of twelfth Duke John II Crispo and "Nobil Donna" Francesca Morosini, Patrizia Veneta.