Santiago Zanchi from Livorno, Italy c. 1780

Santiago ZANCHI was born in Livorno, Tuscany, Italy, but their origins most likey were from Florence. His parents were Pietro Paolo ZANCHI and Maria Bianca ARMANDI. Santiago sailed to the Caribbean, where he met a Spanish lady by the name of Maria Josefa ALCANO, and were married on April, 1799. These were my g-g-g-grandparents.
I would like to know if anyone is investigating these families from Livorno.