He was born circa 1737. His father was Bartolome de Cuellar, and his mother was Gregoria Martinez. In 1750, he lived in Revilla in household number 12. The census recorded that he was 13 years old, the child of the householder. His household included 2 people.
He married Maria Rita Canales, daughter of Joseph Canales Benavides and Antonia Rafaela del Bosque in 1760 in Revilla. He was 23 years old. Marriage source: link.
Maria Trinidad Cuellar, born 1771. She married Jose Antonio de la Garza, son of Javier de la Garza Cantu and Josefa Hernandez in 1786 in Revilla.