He was born circa 1758. His father was Jose Cruz Peña, and his mother was Ana Maria Gutierrez. His father owned Mier 64 grant.
He married Maria Rita de la Garza, daughter of Nicolas de la Garza and Maria Gertrudis Gonzalez on 11 Jun 1779 in Mier. He was 21 years old, and the bride was 17 years old.
In 1782, he lived in Junta de los Rios in household number 72. The church census recorded that he was married, casta, and 25 years old. His household included 2 people:
Jose Sixto Peña, married, casta, age 25.
Maria Rita de la Garza, married, casta, age 20.