He married Rosa Flores, daughter of Juan Flores de Valdez and Teresa Colchada.

Pedro Joseph Flores Alderete, born 1700. In 1722, he requested a dispensation to marry Josefa de Yrigoyen, daughter of Bartolome de Yrigoyen and Margarita de la Fuente in Saltillo due to 3rd degree blood relation. They were married on 26 Apr 1723 in Saltillo. Their padrino was Manuel Galiano, and their madrina was Josepha de Barbarigo. Witnesses were Antonio de las Casas and Antonio Cobos.