Hello,
I too am looking for a Silverio Pena. What I have on him are two names of two of his children, Rosie "Constance" Pena and a Margaret. These could be names they preferred and not legal names. He had a brother Paul/Pablo, whom is buried in South Dakota. Silverio is a half brother to my mother Delphine. In visiting with a cousin we have pieced together some of the names you have listed, hence my reply. Silverio's possible siblings names we have compiled are Teresa, Trine, Delores, Sarafin, Delphine, Lucille, Delores, Jesus/Jesse and Paul. We have run across the names Eufemia and Amado but we do not know how they fit in. Hope this helps and I hope to hear from someone soon.