I'm not sure if she checks these forums anymore, but
@FrejaSP might know. I think that is her castle directly east, and this is in Safe Haven (which she was an active member of for most of its history).
@Victim of Siege owns one of those two keeps to the south as well, and I believe
@Lady Lavendar may own one of the castles to the west.
@Fogsbane potentially also knows, I think he used to do maps of the player towns.
Hopefully one of those folks can help you, good luck!