Viktor Friedrich August Dobbert, son of Pastor Alexander Dobbert & Eugenie Baronesse von Stempel, was born 10 May 1862 in the German colony of Prischib. He died 25 June 1927 in Stettin, Germany.

He studied theology at the University of Dorpat. He was ordained 26 January 1886 in Tsarskoe Selo.

He married on 22 September 1893 in St. Petersburg to Ida Amalie Pflug. She was born 19 May 1869 in St. Petersburg; died 4 July 1946 in Berlin.

Pastor Ferdinand Baumbach was born 9 June 1823 in Kurland (English = Courland, a historical region today located in Latvia).

He served the Lutheran parish in Riebensdorf from 1886-1888.

[There are two Lutheran pastors with the name Friedrich Heinrich Wilhelm Keller. This one went by the name "Heinrich." Some documents erroneously refer to this Pastor Keller as Ferdinand Heinrich Wilhelm Keller.]

Friedrich Heinrich Wilhelm Keller, son of Heinrich Wilhelm Adolf Keller, was born 10 December 1850 in Hapsal, Estonia. He went by Heinrich Keller. He died in 19 July 1926 in the Lichterfelde neighborhood of Berlin, Germany. He was married to Martha Schück (1846-1917).

Pastor Keller was ordained 30 April 1889 in Katharinenfeld (Caucasus).