I am also searching for families tracing back to Spain. On my father's side, my g-grandfather was Rodrigo Ortiz, he was from Michoacan, Mexico. He, I am told, was part Spanish. He was married to Severiana Espinosa, she was born in Mexico in 1867. On my mom's side, the Lauterio & Pizano names were from Naco, Matape & Ures, in Sonora, Mexico. I know the name Lauterio is not very common.