Wikipedia
Asclettin (Sicilian chancellor)
Asclettin or Aschettin ( Latin: Asclettinus, Asclittinus, Aschetinus, Italianised as Asclettino, Asclittino, or Ascontino), Archdeacon of Catania (1145 – 1156) and chancellor of Sicily (March or April 1155 – before April 1156), was an Italo-Norman officer serving William I of Sicily.
In 1156, he was imprisoned in Palermo for treason.