Rabbi Nekhemya HaAmsoni, Tanna
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Aapparently from the second generation of Tannaim. According to many scholars, he is Nahum Gam Zu.
It is unclear whether he was a student of Rabbi Akiva or his teacher (see below for facts and customs).
It is possible that it is called 'Amasuni' after its place 'Emmaus = Amaus