|The oldest mention of the family is found in 1357 in the Brettener room. The clues are more frequent in the following century and are found next to the Brettener area now also in the region northeast of Pforzheim. In the 16th In the century, evidence from Baden-Baden and Upper Alsace was made.
From these present indications, it is obvious that the surname Krust has developed in the Brettener space and was then disseminated to the other areas. This is all the more probable, as it is found in the springs a migratory movement of Bauerbach (on boards) to Niefern (near Pforzheim). At the moment we are starting from four lines, which are also presumed to have a common origin because of their proximity: