Ingvaeonic, also known as North Sea Germanic, is a postulated grouping of the West Germanic languages that would fork into Old Frisian, Old English and Old Saxon and according to some the local dialect of West-Flanders. It must not be thought of as a monolithic proto-language, but as a group of closely related dialects that were also influenced by other groups of Germanic dialects. North Sea Germanic has been proposed by the German linguist Friedrich Maurer who criticized the strict tree diagram… (More on Ingvaeonic)