Analysis of information sources in references of the Wikipedia article "Bulgarians in Italy" in English language version.
During these times a duke of the Bulgarians, Alzeco by name, left his own people, from what cause is unknown, and peacefully entering Italy with the whole army of his dukedom, came to king Grimuald, promising to serve him and to dwell in his country. And the king directing him to Beneventum to his son Romuald, ordered that the latter should assign to him and his people places to dwell in. [1] Duke Romuald, receiving them graciously, accorded to them extensive tracts to settle which had been deserted up to that time, namely, Sepinum (Sepino), Bovianum (Bojano), Isernia [2] and other cities with their territories and directed that Alzeco himself, the name of his title being changed, should be called gastaldius [3] instead of duke. And they dwell up to the present time in these places, as we have said, and although they also speak Latin, they have not at all forsaken the use of their own language.
During these times a duke of the Bulgarians, Alzeco by name, left his own people, from what cause is unknown, and peacefully entering Italy with the whole army of his dukedom, came to king Grimuald, promising to serve him and to dwell in his country. And the king directing him to Beneventum to his son Romuald, ordered that the latter should assign to him and his people places to dwell in. [1] Duke Romuald, receiving them graciously, accorded to them extensive tracts to settle which had been deserted up to that time, namely, Sepinum (Sepino), Bovianum (Bojano), Isernia [2] and other cities with their territories and directed that Alzeco himself, the name of his title being changed, should be called gastaldius [3] instead of duke. And they dwell up to the present time in these places, as we have said, and although they also speak Latin, they have not at all forsaken the use of their own language.