Was owned by the Cats Hunts HQ, owner natcat and Castle is located sth of grimswind ruins in malas. They also have a place nth west of the Brackenwood villiage in the orc fort mid way between luna and umbra.
Haven't see any activiity round either location in well over a year, and the vendors stopped stocking a while before that.
And yes it was the only one of the five castles ever 'claimed' on this shard, and there was no redraw.