He was born circa 1755. His father was Miguel Lopez de Jaen, and his mother was Maria Gertrudis Longoria.
He married Maria Rita Gonzalez, daughter of Francisco Gonzalez and Marcelina Salinas on 1 Sep 1780 in Mier. He was 25 years old, and the bride was 25 years old.
Maria Ignacia Lopez, baptized 5 Apr 1781.
Miguel Lopez de Jaen, head of household, español
Maria Gertrudis Longoria, wife, española
Jose Cayetano Lopez de Jaen, son, 5 years old
Maria Gertrudis Lopez de Jaen, daughter, 4 years old
In 1782, he lived in San Juan Bautista del Cojo in household number 135. The church census recorded that he was married, español, and 27 years old. His household included 3 people:
Jose Miguel Lopez de Jaen, married, español, age 27.
Maria Rita Gonzalez, married, española, age 27.
Maria Ignacia Lopez, a young child, española, age 8.