Friso-Saxon dialects
Friso-Saxon is a collective name for a group of West Germanic dialects found around the North Sea coast. Although they are forms of Low German/Low Saxon, these dialects have experienced strong influence from the Frisian languages. Most of the Friso-Saxon dialects were historically Frisian dialects, until Frisian was replaced with Low Saxon in the Late Middle Ages. However, Frisian has remained a substratum since then in the regions concerned. The only exception to this rule is Stellingwarfs, a Low Saxon dialect which has undergone influence especially from West Frisian. Most of the other Friso-Saxon dialects underwent most influence from East Frisian, for example East Frisian Low Saxon, while the dialect of Dithmarschen which underwent most influence from North Frisian.