Pietro de Columnis was a Genoese merchant active in the late fourteenth and early fifteenth century. He was born as Pietro Scotto and assumed the de Columnis surname after entering into their albergo.
Pietro de Franchi was born as Pietro de Iula and entered into the de Franchi albergo in 1406, after which he was attested as "Pietro de Franchi Iulla".
Pietro de Franchi was a merchant and citizen of Genoa who was active during the second half of the fourteenth century. He was born named Pietro de Levanto and assumed the de Franchi surname after entering into their albergo in 1398.