He was born circa 1763. His father was Bernardo Vela, and his mother was Maria Josefa Peña. His father owned Mier 47 grant.
He married Ana Javiera Barrera, daughter of Santiago Barrera and Maria Salome Garcia on 25 Nov 1789 in Mier. He was 26 years old, and the bride was 10 years old. Her father owned Mier 2 grant.
In 1782, he lived in Mier in household number 51. The church census recorded that he was a youth, español, and 19 years old. His household included 7 people:
Maria Josefa Peña, a widow, age 49.
Juan de Dios Vela, single, age 26.
Gertrudis Vela, an unmarried girl, española, age 19.
Maria Teresa Vela, an unmarried girl, española, age 21.
Felipe Vela, a youth, español, age 19.
Apolinaro Vela, a youth, español, age 17.
Maria Francisca Casilda Vela, a child, española, age 8.