Colio and Covarrubias connection to Suarez de Ibarra and Sanchez de Porras

I believe I have connected the descendants of Geronimo Sanchez de Porras and Mariana Suarez de Ibarra to Francisco de Covarrubias y Leyva , Contador, son of Gaspar Covarrubias and Margarita de Quijada

Familias de Nochistlan Zacatecas y Teocaltiche (Saldivar, Macias, Huizar, Duran, Olmos, Luevano)

Does anyone have Mariano Olmos in there tree? If so...I've been trying for months to figure out who Mercedes Saldivar's parents are. I THOUGHT she may have come from the Duran's, but not sure.