His father was Juan Galvan Alvarez de Godoy, and his mother was Nicolasa Flores de Abrego.
On 8 Mar 1717, he requested a dispensation to marry Josefa Valdez in Monclova. the bride was 32 years old. It was her second marriage. Her husband had disappeared and was presumed dead (dispensation was denied).Dispensation source: Guerra, et. al., Index to the Marriage Investigations of the Diocese of Guadalajara, 12-3, p.62link.