He was born circa 1779, and was baptized 19 Jun 1779. His father was Juan Francisco Saenz, and his mother was Maria Teresa Peña. His father owned Mier 7 grant.
He married Maria Caterina Barrera, daughter of Ignacio Barrera and Manuela Flores on 23 Nov 1801 in Mier. He was 22 years old, and the bride was 24 years old.
In 1782, he lived in San Pedro de las Flores in household number 74. The church census recorded that he was a young child, español, and 3 years old. His household included 9 people:
Juan Francisco Saenz, married, español, age 53.
Maria Teresa Peña, married, española, age 49.
Jose Felipe Saenz, a youth, español, age 19.
Jose Gabriel Saenz, a youth, español, age 18.
Juan Francisco Saenz, a child, español, age 14.
Maria Gertrudis Saenz, a child, española, age 11.
Maria Josefa Saenz, a child, española, age 9.
Jose Antonio Saenz, a child, español, age 7.
Jose Francisco Saenz, a young child, español, age 3.