He was born circa 1761. His father was Jose Antonio Olivares, and his mother was Maria Catarina Peña. His father owned Mier 17 grant.
He married Maria Teodora Montalvo, daughter of Antonio Montalvo and Maria Petra Salinas on 4 Jul 1785 in Mier. He was 24 years old, and the bride was 17 years old. Their padrino was Jose _ Lopez, and their madrina was Manuela Flores. Her father owned Mier 54 grant.
In 1782, he lived in San Juan Bautista del Cojo in household number 128. The church census recorded that he was single, español, and 21 years old. His household included 9 people:
Jose Antonio Olivares, married, español, age 38.
Maria Catarina Peña, married, española, age 37.
Jose Salvador de Olivares, single, español, age 21.
Maria Teresa Olivares, an unmarried girl, española, age 19.
Jose Marcelino Olivares, a youth, español, age 16.
Jose de los Reyes Olivares, a child, español, age 11.
Jose Julian Olivares, a child, español, age 9.
Jose Vicente Olivares, a young child, español, age 5.
Maria Josefa Cesaria Olivares, a young child, española, age 5.