His father was Juan de Castro Mireles, and his mother was Maria Teresa Caballero.
In 1727, he requested a dispensation to marry Maria Guadalupe Perez de Moya. Dispensation source: Guerra, et. al., Index to the Marriage Investigations of the Diocese of Guadalajara, p.249.
Ana de Jesus de Mireles. She requested a dispensation to marry Nicolas Gonzalez de Ochoa.