I want to know the meaning and history of the Croatian girl name Vjosa

I was consulting a native speaker and a person who is writing a dissertation on Christian names in Croatia and Bulgaria. They both said they never heard the name Vjosa and that it is not a traditional Slavic name. The one who is writing her dissertation was checking in her Christian name books (in Croatian, Slovenian, Bulgarian, Swedish, German and Finnish) and she didn´t find that name in any of those books.
In southern Albania there is a river by the name Vjosa. Names of places/rivers have been quite often used as female (usually) Christian names as well. Vjosa is probably used as female name among native Albanians. It is of course possible (if not very common) that an Albanian name has been given to a Croatian girl.