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.
Eucla, Western Australia
The name Eucla is believed to originate from an Aboriginal word "Yinculyer" which one (uncited) source gives as referring to the rising of the planet Venus. It was first used by Europeans for the area at some point before 1867.