He was born circa 1670. His father was Diego Rodriguez de Montemayor, and his mother was Maria Ines de la Garza Gonzalez Hidalgo.
He married Lucia Garcia de Quintanilla, daughter of Diego Garcia de Quintanilla and Beatriz de las Ruelas.
Maria de Montemayor. She married Agustin Moreno.
Margarita de Montemayor. In 1731, she requested a dispensation to marry Nicolas Antonio Cerna.
Miguel Rodriguez. In 1728, he requested a dispensation to marry Rosa Teresa de Moya.
Juan Francisco Javier Rodriguez de Montemayor, born 1710. He married Josefa de Moya on 28 Jan 1732 in Monterrey.