Recently I've found that some Spanish surnames occur combined in twofold with the conjunction "y" ('and'), such as García y Torrado, Real y Ortiz, Vega y Torres. What does this denote? I postulate that the "y" is unto a "-" as observed in English dual-surnames, like with Harley-Davidson & Parker-Fulford; though this is mere speculation. Can someone provide a more definitive explanation as to the meaning for this practice? What does the "y" designate exactly? why is it used? In advance, I thank you. :)