At the time of the Muslim arrival and after, Cassius ruled an area comprising Tudela, Tarazona, Borja, and, probably, Ejea.
He settled at Tarazona, in Aragon, where he practised his profession of physician among both Jews and Christians.
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At Tarazona he completed his Eben Boḥan (May, 1380 or 1385), a polemical work against baptized Jews.
The nearest large town to Moncayo is Tarazona, with many old and historical buildings, located on the massif's northern side 10 km away from it.
Tarazona |
His birthplace is unknown; Saint-Gaudens (France), Tarazona (Aragon), and Barcelona (Catalonia) have all been proposed as the place of his birth.