This study looks at the surname Vitasović and variations in an effort to see if all derive from a common ancestor and where they first settled.

Variations encountered are:

Vitasovich (anglocized variation and found as variation in Hvar Diocese 17th century records)
Vitassi (Hvar Diocese 17th century records as variation of Vitasovich)
Vitasović (middle age and modern and post middle age usage)
Vitassovich de Trupolis (Hvar Diocese 17th century records)
Vitasovich dictus Trupalo (Hvar Diocese 18th century records)
Vitasović Zubacic (Drvenik, Makarska)
Vitasović Lisica (Drvenik, Makarska)

And possibly Vidachevich see https://www.geni.com/discussions/270630

If there are additional variations, please let me know.