by Procopius, who wrongly derives the name from several thousand Moors and Numidians who were banished to the island by the Vandal kings, while Gregory the Great speaks of them in a letter (iv.
Procopius says (Anecd.
The island between the two arms acquired the name of Insula Sacra (still called Isola Sacra) by which Procopius mentions it.
- Procopius, De Bellis and Historia Arcana (best edition by J.
The description given by Procopius does not indicate clearly where this church was situated.