3 surviving letters between Ambrosius, Quaestor and Cassiodorus, spanning c. 522–522.
“VARIAE, BOOK 8, LETTER 13 From: King Athalaric, writing through Cassiodorus To: Ambrosius, Distinguished Quaestor Date:…”
“Senator [Cassiodorus], Praetorian Prefect, to Ambrosius, Vir Illustris, Acting Prefect.”
“From: Senator (Cassiodorus the Elder), Praetorian Prefect To: Ambrosius, Deputy Date: ~538 AD Context: Cassiodorus write…”