Joseph de los Santos Coy was the son of Pedro de los Santos Coy and Francisca de Morales.
He married Leonarda Martinez Guajardo.
He requested a dispensation to marry Geronima Galindo. They were married on 12 Nov 1710 in Saltillo. Dispensation source: Guerra et al., Index to the Marriage Investigations of the Diocese of Guadalajara, 43-14, p.212.
Luisa de los Santos Coy married Antonio de Espronseda.