
1) Pious Russian Protestants
Found on
https://www.crosswordclues.com/clue/stundists

The Stundists are a Russian evangelical Protestant sect that arose around 1860. They are chiefly found on the lower Dnieper and in other parts of southern Russia, and are said to be the descendants of Russian soldiers converted to Protestantism by their German neighbours, who were settled in the area in agricultural colonies by Catherine II. The St...
Found on
http://www.probertencyclopaedia.com/browse/CXS.HTM
No exact match found.