This information is not going to help you, but, just as a curiosity, my maternal grandparents lived in a place called SOCHIA, a section of the village (now town) of Salto, municipality of Montalegre, province of Trás-os-Montes, in PORTUGAL. I was not aware of SOCHIA as a family name until when I tried to discover the etymology of the word, as a toponym. By the way, I can't find anything on the subject.