King Umberto II and Queen Marie Jose of Italy with Princess Maria Pia. They were not happy and eventually separated. Little Maria Pia grew up to marry Prince Alexander of Yugoslavia with whom she had two sets of twins.
The last king of Italy - Umberto II reigning for only 33 days and he was known as the "May King". He married Princess Maria Jose of Belgium. King Vittorio Emanuele III abdicated in favor of Umberto II in an effort to save the Italian kingdom after WW II