My Maternal Grandmother was Lazara Garcia or Garza PEREZ and her Father was Marcos Perez. Lazara Perez married Ramon Gutierres Sefuentes (spellings vary..)
I found this post and noticed that Gutierrez was my Grandfather's Middle name and Perez is my Mother's Maiden name. I know more about siblings of the Perez line if you want to know more. They wer from Paras Nuevo Leon or San Jose de La Laja or Los Herreras Nuevo Leon.