Possible areas of Brennenburg Castle

[PutraenusAlivius]

Castle Brennenbugr is real.
It lies in small Russia at end of river "pregola"
PS: The amnesia story is too not fiction(in some reason) the Daniel and Alexander been the villagers of this castle.
Alexander killed all other villager's and tried to kill Daniel, then he killed Alexander.
(1978/9)

Source?

I think he's lying. I search the River Pregolya on Wikipedia and no castle or some sort appears.