He was born circa 1741. His father was Francisco Lopez de Jaen, and his mother was Maria Agustina Longoria. His father owned Porción 12, Camargo. In 1750, he lived in Camargo. The census recorded that he was the son of a settler, español, and 9 years old. His household had 14 people, including 3 servants, and they received government aid to move to the colony. He owned Porción 15, Camargo.
He married Maria Josefa Cano.
Jose Francisco Lopez. He married Maria Juliana de la Garza, daughter of Juan de la Garza and Maria Gertrudis Chapa on 7 Jan 1789.
Maria Josefa Lopez de Jaen. She married Juan Jose de la Garza Montemayor, son of Juan de la Garza and Maria Gertrudis Chapa.
Porción 15, Camargo