You might want to try and look over records from the Philippines and Honolulu or even Portugal where the original official geneologies might have been transferred.
There are colonies of Farinas' in the Philippines and Hawaii. You might strike it rich there. There is another Farinas, Gerald Farinas, 16 years old, looking for his Italian roots as well.
He is in Honolulu. 3215 Ala Ilima Street A604, Honolulu, HI 96818-2904. Maybe you can help him also with your family information.