Atenulf declared the two principalities of Capua and Benevento inseparable and instituted the principle of co-rule between sons and brothers which was to guide the principality until its division in 981.
Atenulfo declarou inseparábeis os principados de Capua e Benevento e instituíu o principio de cogoberno entre fillos e irmáns que guiou o principado ata a súa división en 981.