The family of Osma is native of region of La Osma Riojana in Spain, where also exists the Town of Osma. In the Cathedral of this city it finds the tomb of Saint Peter of Osma. The lineage of the family of Osma begins in Peru with Don Gaspar of Osma and Tricio. Graduated in laws, he came to Peru between 1801 and 1804, holding important 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.