 He conquered Liguria (643), including the capital Genoa, Luni, and Oderzo; however, not even a total victory over the Byzantine Exarch of Ravenna, defeated and killed along with his eight thousand men at the River Panaro, succeeded in forcing the Exarchate to submit to the Lombards.Internally, Rothari strengthened the central power at the expense of the duchies of Langobardia Maior, while in the south the Duke of Benevento, Arechi I (who in turn was expanding Lombard domains), also recognized the authority of the King of Pavia.The memory of Rothari is linked to his famous edict, promulgated in 643 and written in Latin, although it only applied to the Lombards.