These are the origins and migrations of Kastlers, Kastelers, and Kastners. According to DNA tests the Swabian Kastlers, Königsbach Kastners, and Westhoffen Kastlers are closely related. The first migration was probably from the Swabian Kastlers to the Königsbach Kastners. From there, one or more persons migrated to Westhoffen. Both the Königsbach and Westhoffen clans have Conrad Kastler (Kastner) as the oldest ancestor, who died in 1592-1594.