Moshe: Here lies Rabbi Moshe Yebi son of the honorable Shimeon Elihu (Kantar). .... He died 13 Nissan 5723. May his soul be bound up in the bonds of eternal life.
Rivka: Here lies ... Rivka daughter of Moshe. She died 13 Nissan 5753. May her soul be bound up in the bonds of eternal life.
(The untranslated parts of the inscriptions may be Yiddish rather than Hebrew.)