He was born circa 1766. His father was Marcelino Saenz, and his mother was Margarita Almaraz. His father owned Porción 25, Mier. In 1782, he lived in San Nicolas/ Santa Rosalia de la Bonita in household number 136. The church census recorded that he was a youth, español, and 16 years old. His household included 6 people.
He married Maria Guadalupe de la Garza, daughter of Juan de la Garza and Maria Gertrudis Chapa on 3 Mar 1783 in Mier. He was 17 years old, and the bride was 21 years old. Her father owned Porción 23, Mier.