In 968, his uncle Landulf III died and this was the occasion of his rise, as Pandulf ignored the rights of Landulf's son Pandulf, his nephew, and instead associated his own son with the government.
Pada tahun 968, pamannya Landulf III meninggal dan hal ini memberinya kesempatan berkuasa, Pandulf tidak memperdulikan hak-hak putra Landulf Pandulf, keponakannya, dan malah melibatkan putranya sendiri dengan pemerintahan.