Jaquinta was the daughter of Argyritzos (Archirizus), the Norman governor of Bari in the County of Apulia. The Dioclean king Michael I selected her as wife for his son Constantine Bodin, recently returned from captivity in Antioch, shortly after his coronation in 1077. According to the "Annales Barenses", the two wed in April 1078, but the marriage may have taken place any time after. The union cemented the alliance between Dioclea and Norman Sicily against the Byzantine Empire. The couple's sons were Michael, George, Archiriz and Thomas.