Eureka Classis
On June 7, 1911, seven ministers and sixteen congregations organized to form the Eureka Classis. The name of the Classis came from the Greek word ‘eureka’ which means ‘I found it’ and not on the town Eureka, South Dakota, where the second meeting of the Classis would be held. The name was designed to mean that they had found a solution to their doctrinal problems with the rest of the denomination.
Haidamaka
Other more ancient exonyms of the same haidamaks include "levenetz" and "deineka". Equivalents of "haidamaka" include "opryshok" in Ukrainian Galicia, and "hajduk" in the Central Europe and the Balkans. The first people to use the term "Haidamaki" to refer to themselves fought in Ustim Karmaluk's uprising of the early 1830s.