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In page Toulon:

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Toulon was Christianized in the 5th century, and the first cathedral built. Honoratus and Gratianus of Toulon (Gratien), according to the Gallia Christiana, were the first bishops of Toulon, but Louis Duchesne gives Augustalis as the first historical bishop. He assisted at councils in 441 and 442 and signed in 449 and 450 the letters addressed to Pope Leo I from the province of Arles.[citation needed]