He was born circa 1775. His father was Juan Francisco Saenz, and his mother was Maria Teresa Peña. His father owned land in Porción 7, Mier. In 1782, he lived in San Pedro de las Flores in household number 74. The church census recorded that he was a child, español, and 7 years old. His household included 9 people. In 1791, he lived in San Pedro de las Flores in household number 88. The church census recorded that he was a youth, español, and 16 years old. His household included 5 people.