[1] The name Achalm appears to refer to a nearby stream, the Ach which comes from the River Alm.

His brother, thinking he was honoring his last words named the castle Achalm.

The owner of Castle Achalm, Heinrich of Neuffen, sided with the rebellious King Henry VII.

[1] In 1377 Graf or Count Ulrich of Württemberg marched from the castle to attack the town of Reutlingen.

Ulrich's troops were defeated and Reutlingen remained a Free Imperial City.