In 1900, the construction of a church in honor of the martyr Agrippina of Rome began in the resettlement village of Unar in the Tarsky district of the Tobolsk province. The funds for this were donated by state councilor I.I. Kossakovsky to the Fund named after His Imperial Majesty Alexander III.

On September 4, 1901, Bishop Sergey (Petrov) of Omsk consecrated the church. In the same year, a church-parish guardianship was organized.

The church was wooden, with a bell tower built in the same style. According to data from 1914, the church served not only the village but also the surrounding villages: Bogomel, Ermakovka, Kechina, Mezhevna, Georgievka, Yurievka, Bolshoy Selim, Dubavskoye, Vileyna, Petrovskoye, Levo-Kutiskoye, Rozhdestvenskoye, Itkutskoye, Pogorelovo, Novokovokovo, Kurlandskoye, and Fedorovskoye. In the early 1910s, the diocesan authorities petitioned for funds from the Fund named after His Imperial Majesty Alexander III for the construction of a church in the Petrovskoye settlement, with the addition of several settlements to it.

The clergy consisted of a priest and a psalmist.

In the village of Unara and the settlement of Ermakovka, church-parish schools operated.

Parishioners did not show due diligence in maintaining the church: despite the availability of wood, the church and schools often remained without firewood for heating, and parishioners refused to repair the clergy houses.

The church was closed and likely destroyed after 1937.