He was born circa 1767, and was baptized 20 Oct 1767 in Mier. His father was Juan Francisco Saenz, and his mother was Maria Teresa Peña. His father owned Mier 7 grant. His padrino was Dn Jose Luis Lopez, and his madrina was Da Ana Polonia Lopez (sister).
He married Maria Agustina Garcia, daughter of Joaquin Garcia and Rosalia Salinas on 21 Nov 1791 in Mier. He was 24 years old, and the bride was 18 years old. Her father owned Mier 64 grant, Mier 62 grant, Mier 52 grant.
Julian Saenz. He married Maria Rosalia Izaguirre, daughter of Jose Manuel Izaguirre and Dorotea Gonzalez.
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 14 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.