Mordentish (Language)
From Mistipedia
There is some confusion in early canon as to whether Mordentish was faux-French, insofar as it's the language of Richemulot and Dementlieu. Mordentish has two forms, sometimes referred to as Upper and Lower Mordentish. Lower Mordentish is preferred in Mordent, while Upper Mordentish is preferred in Richemulot and Dementlieu. The language is thus analogous to early English that was combined from German and French.