Hi,
I might be of any help.

My father is Jose Eduardo Silva.

His father Manoel Zacarias da Silva come the capeverdean Islands, Santo Antao, from Portugal. He had a son named Eduardo Manuel Silva.

They were 3 brothers whom came from Portugal because of a deseas. Eduardo Manuel had some brothers whom left to America, as my father (still alive and 89 years old) does recall.
Not sure if we are talking about the same people, but it is to obvious not to be so. As I look back I see the tradion of the names Jose Eduardo. It is never Joseph. But Eduardo is repeated throughout the whole family. The original name is perhaps "da Silva Branco" but got lost as soon as they arrived in cape verde. our families nowadays has spread over Portugal, Argentina, America, the Netherlands, France, Spain and Italy (and so on) Mostly we live in Sao Vicente cabo Verde. I am on face book as AMERIKO da Silva Netherlands, Greetings to you all and hopefully your quest will be rewarded. Americo