He was born circa 1767. His father was Jose Peña, and his mother was Ana Polonia Lopez. His father owned Porción 33, Mier. 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. In 1791, he lived in Mier in household number 55. The church census recorded that he was married, español, and 21 years old. His household included 3 people.
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 Porción 8, Mier.
Jose Rafael Casimiro Peña, born 1790.