Complex sentence: Like the reign of his predecessor Pope Urban VIII (of the equally papal Barberini family) Innocent X's rule was littered with examples of nepotism and other Pamphili family members did exceptionally well from the Innocent X papacy.
Split into simpler sentences: Like the reign of his predecessor Pope Urban VIII (of the equally papal Barberini family), Innocent X's rule was littered with examples of nepotism. Members of the Pamphili family members did exceptionally well from the Innocent X papacy.