Under Landulf IV's sons, the union of Capua and Benevento broke down. Although they remained united by law, Pandulf ruled in Capua and Landulf V ruled in Benevento. However, all of the Lombard states in Italy were eventually unified under Pandulf, who was called "Ironhead". The Emperor Otto I gave the Duchy of Spoleto and Camerino to Pandulf in 967. When Landulf V died in 969, Pandulf seized Benevento from his nephew, Pandulf II. He then became Prince of Salerno in 978, when the reigning prince died without any children. Before Pandulf died, he split the country between his sons; Benevento–Capua was given to his eldest son, Landulf VI.