Seven Stars, Seven Stones and One White Tree...

[Mithalwen]

Originally Posted by Ardent

Presumably this would also explain why they were incorporated into Durin's emblems on the gates of Moria. Wasn't Eregion/Hollin part of the realm of Arnor?

Theoretically maybe but I think durin's crown wasanother name for the same stars. In our own world the southern cross is incorporated in to various flags perhaps most notably on the flags of Australia and new zealand.