Complex sentence: Antonio Marcello Barberini (18 November 1569-11 September 1646) was an Italian cardinal, younger brother of Pope Urban VIII, who elevated him in 1624.
Split into simpler sentences: Antonio Marcello Barberini (18 November 1569--11 September 1646) was an Italian cardinal. He was the younger brother of Maffeo Barberini, later Pope Urban VIII, who elevated him to cardinal in 1624.