He was born circa 1771. His father was Juan Pantaleon Izaguirre, and his mother was Maria Gertrudis Vela. His father owned Porción 55, Mier, Starr County, Porción 56, Mier. In 1782, he lived in Las Animas in household number 96. The church census recorded that he was a child, español, and 11 years old. His household included 9 people.
He married Maria Dorotea Gonzalez, daughter of Jose Marcelino Gonzalez and Maria Gertrudis Ramos on 3 Mar 1791. He was 20 years old, and the bride was 15 years old.
Francisco Izaguirre. He married Gertrudis Ramirez, daughter of Jose Eugenio Ramirez Hinojosa and Maria Rita de la Garza Falcon. He owned Porción 55, Mier, Starr County.
Maria Rosalia Izaguirre. She married Julian Saenz, son of Juan Francisco Saenz and Agustina Garcia.
Antonio Izaguirre. He married Manuela Olaya Longoria, daughter of Jose Marcelino Longoria and Rafaela Hinojosa. He owned Santo Domingo de Arriba grant, Jim Hogg County. He died on 31 Aug 1836 in Santo Domingo (?). Cause of death: killed by Indians.