"The first mention (records?) of Etobon date from 1256. The feudal castle was the most important of the region. It occupied a place of strategic importance.

During the 12th and 13th centuries, Etobon had its own seigneur. The last was named Vernier of Etobon. His property was confiscated by the Count of Montbeliard. The count created a functionary of the castle to protect and guard the castle. At that time, the "bourg" (county?) of Etobon consisted of 50 households as well as 37 at Belverne and 27 at Chagey.

In 1331, Eudes IV of Bourgogne took over the seigneurie. The castle was repaired and fortified.

In 1349, the castle of Etobon passed to Henri of Montfaucon, Count of Montbeliard. The fiefdom of Magny of Anigon composed of two villages Magny and Clairegoutte were re-united to the seigneurie of Etobon. From that time, the seigneurie was composed of 5 villages in the woods.

In 1397, because of the marriage of Countess Henriette to the Count Eberhard IV of Wurtemberg, the seigneurie of Etobon consisted of Montbeliard, Granges, Clerval, Passavant, Etobon, Porrentruy, Saulnot and belonged thereafter to the Duchy of Wurtemberg until 1793 when it was re-attached to France.

The castle was maintained until 1519 when it was burned (destroyed?) under the attack of the Seigneur of Porrentruy. The princes of Montbeliard authorized the inhabitants to take the stones for their own constructions. The castle rapidly disappeared.