Keltern

The oldest documentary records for the constituent towns of Keltern are from 827 or 830 for Dietenhausen, 919 for Ellmendingen, sometime in the 11th century for Dietlingen, 1219 for Weiler, and around 1300 for Niebelsbach.
The towns of Dietenhausen, Dietlingen, Ellmendingen, and Weiler were for most of their history part of Baden. They were assigned to Pforzheim's jurisdiction in 1803 when the state became the Grand Duchy of Baden. When the districts were shuffled in 1809, the four towns were assigned to the second Pforzheim Oberamt, and again remained under Pforzheim when the district was recreated as Landkreis Pforzheim on 25 June 1938. Niebelsbach was ceded on 17 October 1806 to the Kingdom of Württemberg, under whom it was assigned to Oberamt Neuenbürg until 1 October 1938, when it was reassigned to Calw. Dietenhausen was incorporated into Ellemendingen on 1 July 1971.

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