From the 14th to the 16th century, the Lords of Klingenberg exercised the bailiwick rights they held as fiefs of the Archduchy of Austria in Arlen.

The first industrial settlement took place in 1834 with the founding of the “Baumwoll-Spinn & Weberei Arlen” by the entrepreneur Johann Hermann Ferdinand ten Brink (1810–1887), who was born in Amsterdam in the Netherlands .

Over the next 150 years, the ten Brink family of entrepreneurs shaped Arlen and the Hegau not only economically, but also socially.

Unusual for the time, the company paid allowances for working-class families with many children in addition to wages.

In addition, there were factory canteens, courses in healthy eating and a girls’ home (the so-called “Klösterle”) for single female workers in Arlen and Volkertshausen.

In the district of Rielasingen, the most important evidence of human settlement dates back to the Hallstatt period .

The oldest and most important medieval landowners in Rielasingen included the monasteries of Reichenau and St. Georgen in Stein am Rhein .

The place name - derived from the personal name "Wormilo" - first appears in 1165 in a interest list of the Reichenau Monastery, which owned most of the town.

As in Wangen, Gailingen and Randegg, also imperial knightly towns in the Hegau, numerous Jewssettled in Worblingen.