Giacomo de Franchi was a Genoese merchant active during the fifteenth century. He was born as Giacomo de Viale and assumed the de Franchi surname after entering into their albergo in 1440, although he was still sometimes named as "de Viale" or "de Franchis de Viale".
Iacobo de Viali quondam Benedicti... civ[e] Ianue
Iacobus de Franchis de Viali quondam Benedicti
Giacomo de Franchi q. Benedetto de Viale
Tommaso Duracino, filza 5, nr. 328 (formerly nr. 108)
Caffa. Estratti dall’Archivio di S. Giorgio, nr. 11