 After its first mention in Reinfried’s 1150 document as "Hornesowe", it was also mentioned in 1196 as "Hurnishowen" and in 1289 as "Hurresouwe".The name supposedly does not go back to a "Hirschau" ("hart’s riverside flat"), but rather to a man with the early Frankish name "Hurni", and thus it originally would have meant "Hurni’s Riverside Flat".The name "Hurni", however, is unattested.