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.
Eboracum
The name "Eboracum" comes from the Common Brittonic "Eburākon", which means "yew tree place". The word for "yew" was "*ebura" in Proto-Celtic (cf. Old Irish "ibar" "yew-tree", (older "iobhar"), , "alder buckthorn", "alder buckthorn"), combined with the proprietive suffix "*-āko(n)" "having" (cf. Welsh "-og", Gaelic "-ach") meaning "yew tree place" (cf. "efrog" in Welsh, "eabhrach/iubhrach" in Irish Gaelic and "eabhrach/iobhrach" in Scottish Gaelic, by which names the city is known in those languages). The name was then Latinized by replacing the Celtic neuter nominative ending "-on" by its Latin equivalent "-um",a common use noted also in Gaul and Lusitania. Various place names, such as Évry, Ivry, Ivrey, Ivory and Ivrac in France would all come from "*eburacon / *eburiacon"; for example: Ivry-la-Bataille (Eure, "Ebriaco" in 1023–1033), Ivry-le-Temple ("Evriacum" in 1199) Évry (Essonne, "Everiaco" in 1158), etc.