His father was Antonio Montalvo, and his mother was Maria Petra Salinas. His father owned Porción 54, Mier. In 1782, he lived in Las Jaras in household number 108. The church census recorded that he was a young child, español. His household included 14 people. He owned Las Vivoritas grant, Jim Hogg County.
He married Maria Encarnacion Guerra Cañamar, daughter of Juan Manuel Guerra Cañamar and Maria Isabel Treviño on 17 Feb 1806. the bride was 18 years old.
Las Vivoritas grant, Jim Hogg County