Authari

Authari (c. 550 – 5 September 590) was king of the Lombards from 584 to his death. He was considered the first Lombard king to have adopted some level of Romanitas (Roman-ness) and introduced policies that led to drastic changes, particularly in the treatment of the Romans and greater tolerance for the Christian faith.

Source: Wikipedia — https://en.wikipedia.org/wiki/Authari