He was born circa 1768. His father was Manuel Hinojosa [Jr.], and his mother was Juana Sanchez. His father owned Mier 5 grant.
He married Maria Gertrudis Saenz, daughter of Juan Francisco Saenz and Maria Teresa Peña on 16 Jan 1786. He was 18 years old, and the bride was 17 years old. Her father owned Mier 7 grant.
In 1782, he lived in Mier in household number 10. The church census recorded that he was a youth, español, and 14 years old. His household included 10 people, 2 of whom were likely servants:
Don Manuel [Jr.] Hinojosa, married, español, age 51.
Juana Sanchez, married, española, age 38.
Maria Rosalia Hinojosa, an unmarried girl, española, age 22.
Jose Marcelino Hinojosa, a youth, español, age 19.
Maria Ygnes Hinojosa, an unmarried girl, española, age 17.
Jose Santiago Hinojosa, a youth, español, age 14.
Maria Gregoria Hinojosa, a young child, española, age 6.
Maria Gertrudis Hinojosa, a young child, española, age 3.
Maria Gertrudis Cruz, single, india, age 28.
Maria Concepcion Cruz, an unmarried girl, casta, age 13.
In 1791, he lived in Mier in household number 11. The church census recorded that he was married, español, and 23 years old. His household included 5 people:
Jose Santiago Hinojosa, married, español, age 23.
Maria Gertrudis Saenz, married, española, age 20.
Maria Estefana Hinojosa, a young child, española, age 3.
Jose Mariano Hinojosa, a young child, español, age 1.
Maria Catarina Hinojosa, a young child, español.