The name Kirnbach comes from the
Middle High German word
Kürn (= mill). It was first mentioned in 1275 as
Kurnbach or
Kurenbach. Kirnbach was part of the territory of the Lords of
Hornberg. The village went by marriage to Duke Reinhold of
Urslingen and, after his death, to the line of
Geroldseck from
Sulz. From them Kirnbach and its entire superior district (
Oberamt) of Hornberg went to the
Kingdom of Württemberg. In the border treaty between Württemberg and Baden (
Gränzvertrag zwischen dem Königreich Würtemberg und dem Großherzogthum Baden), which was signed on 2 October 1810 in Paris, several elements (
Stäbe) of Hornberg were given to the
Grand Duchy of Baden. They included the municipality of Kirnbach, the towns of
Hornberg and
Schiltach and the municipality of
Gutach. The village was an independent municipality until 1974 before it was incorporated into the borough of Wolfach. == Churches ==