Sometimes all Frisians from the eastern Frisian regions (East Frisians, Saterland Frisians, Oldenburg Frisians, Rüstringen Frisians, Wurtfrisians) are referred to as East Frisians, because all these Frisians form the eastern branch of the Frisians.
In the eastern Frisian regions, in contrast to North and West Frisia, the Frisian language was gradually replaced by Low Saxon dialects very early. The local dialect is now East Frisian Low Saxon. Though not a Frisian language by linguistic classification, the language is a dialect of the Low Saxon language which is locally known as "East Frisian" ("Oostfreesk"), and has major influences in vocabulary and grammar from the original East Frisian language. The only surviving dialect of the East Frisian language is the Saterlandic dialect.
