He was born circa 1767. His father was Jose Peña, and his mother was Ana Polonia Lopez. His father owned Mier 33 grant.
He married Maria Feliciana Hinojosa, daughter of Gervacio Hinojosa and Teresa Treviño on 7 Jan 1789. He was 22 years old, and the bride was 13 years old. Her father owned Mier 8 grant.
In 1782, he lived in Mier in household number 41. The church census recorded that he was a youth, español, and 15 years old. His household included 7 people:
Jose Peña, married, español, age 55.
Ana Polonia Lopez de Jaen, married, española, age 49.
Francisco Peña, a youth, español, age 19.
Jose Marcelino Peña, a youth, español, age 15.
Juan Jose Guillermo Peña, a child, español, age 10.
Juana Hinojosa, a child, española, age 11.
Maria Antonia de la Garza, a young child, española, age 3.