sentences:  However, it is likely that the ruler Tomislav, the first crowned King, was able to exert much control over Savia and adjacent areas during his reign.It is indeed at this time that sources first refer to a "Pannonian Croatia", appearing in the 10th century Byzantine work "De Administrando Imperio".In the meantime, the Dalmatian Croats were recorded to have been subject to the Kingdom of Italy under Lothair I, since 828.