He was born circa 1721. His father was Jose Manuel Hinojosa, and his mother was Maria Inez Chapa. His father owned Mier 4 grant.
He married Lucia Ramirez.
He married Rosa Maria Saldua. It was his second marriage.
Gertrudis Hinojosa. She married Jose Florencio Canales, son of Juan Bautista Canales and Maria Tomasa Salinas on 1 Sep 1778 in Mier.
Ana Maria Lucia Hinojosa, born 1750. She married Jacinto de la Garza, son of Sabas de la Garza and Margarita Vela in Sep 1768 in Mier.
Pedro Jose Hinojosa, born 1753. He married Maria Candelaria Garcia, daughter of Juan de Dios Garcia and Maria Candelaria Hinojosa.
Francisco Antonio Hinojosa, born 1753. He married Maria Candelaria Garcia, daughter of Juan de Dios Garcia and Maria Candelaria Hinojosa on 23 May 1774 in Mier. He married Maria de Jesus Treviño on 18 Mar 1791 in Revilla.
Jose Miguel Hinojosa, born 1765. He married Ana Dominga Canales, daughter of Joseph Cayetano Canales and Maria Dominga Guerra. He married Isabel Maria Garcia, daughter of Vicente Garcia and Maria Josefa Treviño.
In 1782, he lived in Mier in household number 13. The church census recorded that he was married, español, and 58 years old. His household included 4 people:
Don Marcelino Hinojosa, married, español, age 58.
Rosa Maria Saldua, married, española, age 57.
Pedro Jose Hinojosa, single, español, age 29.
Jose Miguel Hinojosa, a youth, español, age 17.
In 1791, he lived in Mier in household number 12. The church census recorded that he was married, español, and 67 years old. His household included 3 people:
Dn Marcelino Hinojosa, married, español, age 67.
Da Rosa Maria Saldua, married, española, age 65.
Jose de Jesus Hinojosa, a young child, español, age 2.
In 1767, as the son of a primitivo poblador, he was granted Mier 30 by the King of Spain. There was stock and a ranch at the site. Marcelino Hinojosa did not live in Mier but petitioned for the tract and said he would reside in the district.