I just been wondering what is know about Carlos Lomellin. I am a decedent of him through his son Lucas. I have research him and from other post that I have seen I know that he worked on the mines?

I just been wondering what is know about Carlos Lomellin. I am a decedent of him through his son Lucas. I have research him and from other post that I have seen I know that he worked on the mines? I know that he came from Genoa Italy. Nobody seems to know who his parents were. Is this because Carlos is a dead end or because nobody has research the records in Italy?