He and Josaphata Hordashevska founded the religious congregation of the Sisters Servants of Mary Immaculate.

Jeremiah Lomnytskyj, O.S.B.M., was born on February 8, 1860, in Kavske, in the deanery of Drohobych, Austrian Empire (now Stryi Raion, Lviv Oblast in western Ukraine).

[2] After teaching for several years in various centers, he was sent to be spiritual director for the newly opened novitiate of the Sisters Servants in Krystynopil, in September, 1894.

They were able to hold their first General Chapter in August of that year, at which Hordashevska was elected the first Superior General of the Congregation and Lomnytsky stepped down from his post of commissary of the SSMI, and was replaced by Father Platonid Filas, OSBM.

[2] In the 1904-1908 period, he made two trips to Russia with the aim of drawing the attention of the Russian government and the public to the plight of the Ukrainian Greek Catholic Church in Kholm and Podlachia, and at the same time, with directions from Metropolitan Andrey Sheptytsky, to help the Russian Greek Catholic Church in Russia.