The Osma family is native to the region of La Osma Riojana in Spain, where the Town of Osma also exists. The tomb of Saint Peter of Osma can be found in the Cathedral of this city. The Peruvian lineage of the family of Osma begins with Don Gaspar of Osma and Tricio. He graduated in laws and came to Peru between 1801 and 1804. He was an influential man with coveted work positions.

He married Doña Josefa Ramírez de Arellano and Baquijano. They had fourteen children; one of them, Mariano, married Francisca Pardo and Lavalle. One of their children was Pedro of Osma and Pardo, who married Angelica Gildemeister and Prado. They had two children, Angelica and Pedro of Osma Gildemeister.