The Archaeological Museum (Musée Archéologique) possesses a funerary inscription stating “This is the sepulcher of the venerated sage Isaac”. The Museum is sadly closed until further notice.
The Municipal Library (Bibliothèque Municipale) has copies of three funerary inscriptions (the originals have been lost):”this is the sepulcher of Dame Dolcena, daughter of …”; “This is the sepulcher of Rabbi Isaac, son of Haviv and of Meir”; and “Sepulcher of the venerated sage Rabbi …”