Located in the rural centre of Baltar, the original construction is due to Juan Pardo and Andrade at the end of the 16th century, being ceded by the last Marchioness of San Sadurniño, María de la Natividad Quindós y Villarroel, to the Claretian Missionaries in 1910.

The Pazo de Baltar, with its adjective architecture of magnificent chapel, monumental fountain and large granary, attests to the wealth of the rural nobility of Val.

The construction of this Pazo de Baltar, very different from the one preserved today, is attributed to Ares Pardo or his son Don Xoan Pardo de Lago e Andrade, grandson of Pedro Tenreiro de Lago, lord of Belote, in the first half of the 16th century, who is considered the first lord of Baltar.

A descendant of the founder, Doña Josefa Cayetana Pardo e Moscoso, married her relative Don José Jacinto Quindós e Andrade, III Marquis of San Sadurniño, and the Lordship of Baltar entered this house.

The Marquises of San Sadurniño established their residence in this palace of Baltar. Among the architectural elements surrounding the palace, the splendid chapel to which the remains of all the members of this family were transferred stands out, as well as a baroque fountain of great stylistic value and beauty.

The last Marquise of San Sadurniño, Doña María de la Natividad Quindós e Villarroel had no descendants, donating the palace of Baltar to the missionary fathers of the Sacred Heart of Mary, who built a new monastery on the foundations of the old palace, with little fortune, in 1914.