4 surviving letters between Aper and Paulinus of Nola, spanning 421-425 AD.
To my holy and venerable brother Aper,
To our holy and venerable brothers Aper and Amanda — Paulinus and Therasia, sinners.
To the holy brothers Aper and Amanda — Meropius Paulinus and Therasia send greetings in God and Christ.
To our holy, venerable, and most dear brother and sister, Aper and Amanda — Paulinus and Therasia, sinners.