Verona Cathedral is a Roman Catholic cathedral in Verona, northern Italy, dedicated to the Blessed Virgin Mary under the designation Santa Maria Matricolare. It is the episcopal seat of the Diocese of Verona.

The Codex Veronensis, designated by the siglum b or 4, is a 5th-century Latin manuscript of the four Gospels, written on vellum which has been dyed purple. The text is written in silver and occasionally gold ink, and is a version of the old Latin New Testament Gospels. The Gospels follow in the Western order.