He was born circa 1772. His father was Luis Lopez de Jaen, and his mother was Juana Maria Villarreal. His father owned Mier 3 grant.
In 1782, he lived in Santa Gertrudis / San Jose de la Rinconada in household number 84. The church census recorded that he was a child, español, and 10 years old. His household included 6 people:
Luis Lopez de Jaen, married, español, age 51.
Juana Maria Villarreal, married, española, age 45.
Toribio Lopez de Jaen, single, español, age 25.
Jose Miguel Lopez de Jaen, single, español, age 22.
Maria Guadalupe Lopez de Jaen, an unmarried girl, española, age 19.
Jose Maria Lopez de Jaen, a child, español, age 10.
In 1852, as the son of the original grantee, he inherited Revilla 21 from the State of Texas.