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The Archaeological Museum (Musée Archéologique) possesses a funerary inscription stating “This is the sepulcher of the venerated sage Isaac”.
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 …”