These must be carefully distinguished from the A postoolians, Mennonites of Frisia, who followed the teachings of the pastor Samuel Apostool (1638 - beginning of 18th century).
The German-Russian Mennonites, whose immigration became notable about 1874, furnished at first many examples of communal economy, but these were later abandoned.
In 1906 the total number of Mennonites was 7445, of whom 3581 were members of the General Conference of Mennonites of North America, 1825 belonged to the Schellenberger Briider-gemeinde, and the others were distributed among seven other sects.
Its inhabitants, 21,282 in 1900, are Little Russians, Jews and Mennonites, who carry on agriculture and shipbuilding.
Several of his friends were Collegiants, or belonged to the similarly minded community of the Mennonites, in which the Collegiants were afterwards merged.