Vytautas, the later Grand Duke of Lithuania, was baptized in Tapiau in 1385.
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When the town was known as Tapiau before 1946, the golden sun also included the Tetragrammaton (Jehova-Sonne).
Gvardeyskoye Urban Settlement, a municipal formation which the town of district significance of Gvardeysk in Gvardeysky District of Kaliningrad Oblast, Russia is incorporated as
However, on their way back they were attacked by the Komtur of Tapiau (present-day Gvardeysk) and lost all booty.