Austro-Bavarian language
In German, there is usually a difference made between "bairisch" (referring to the language) and "bayerisch" (referring to the state of Bavaria and used in the name of BMW). Because of King Ludwig I's passion for everything Hellenic, the German name for Bavaria today is spelled "Bayern", while the language spoken there has retained its original spelling "Bairisch"—note the I versus the "Hellenic" Y.