Welcome Beverly to the nuestrosranchos Community. I have a possible lead for you:
There is a Tomas Munoz Sotomayor baptized on 3/Feb/1694 in Pinos, Zacatecas. He is the son of juan Muñoz de Pineda and Lorenza Diaz de Sotomayor.
Good luck in your research,
Rick A. Ricci