Ambrogio Costa was a chaplain and citizen of Genoa who was active during the middle of the fifteenth century.
presbitero Ambrosio de Costa capellano ecclesie Ianuensis
domino presbitero Ambrosio de Costa capellano in ecclesia maiore Ianuensi... civ[e] Ianue
Giovanni Battista Parisola, filza 6, series I, nr. 126