Historical Context
Vitalius belonged to the Italo-Greek monastic world of southern Italy, where Greek-speaking communities under Byzantine influence preserved Eastern monastic traditions. His departure from Sicily reflects the pressure of recurring Arab incursions on the island during the tenth century, which drove many Sicilian monks toward the relative safety of Calabria and Lucania.
In those regions he worked as an organizer of monastic life, founding and restoring communities that drew disciples to him. The synaxarion notes that Saint Luke of Demena visited him, and that the two prayed and discussed spiritual matters together, situating Vitalius within a network of contemporary Italo-Greek ascetics.