northeast of Altenkirchen. Wissen is the seat of the Verbandsgemeinde ("collective municipality") Wissen. The name Wissen first appeared in the records...

Crottorf Castle near Friesenhagen (since 1563 owned by the family) Schönstein Castle near Wissen (since 1589 owned by the family) Trachenberg Castle, Silesia...

zu Trachenberg (10 February 1877, Berlin – 27 November 1953, Schönstein Castle in Wissen), who in 1904 married Viscountess Hanna Aoki-Rhade (1879–1953)...