Complex sentence: Sometime in the 1970s, they got divorced and she did get the custody of Francesca and remarried an Italian man named Vittorio Parreti, who was later murdered.
Split into simpler sentences: Sometime in the 1970s, they divorced and his ex-wife received custody of Francesca. Marcella remarried, to an Italian man named Vittorio Parreti, who was later murdered.