Complex sentence: Albania was then ruled by Sahl ibn-Sunbat (or Sahl i Smbatean), the exact origin of whom is not known V. Minorsky.
Split into simpler sentences: Albania was then ruled by Sahl ibn-Sunbat (or Sahl i Smbatean). According to Minorsky, the exact origin of Sahl is not known V. Minorsky.