For centuries, people were convinced the Codex Eyckensis had been written by Harlindis and Relindis, the first abbesses of the abbey of Aldeneik, who were later canonized.
Storočia boli ľudia presvedčení, že Codex Eyckensis napísali Harlindis a Relindis, prvé abatyše opátstva Aldeneik, ktoré boli neskôr kanonizované.