On Goguryeo

I really have no idea about Goguryeo, sorry.

I should have been more specific. The issue is about putting reconstructions, and specifically, reconstructions made by a single scholar into an appendix and/or allowing them in the main namespace? Also of interest is that these terms are being added as Chinese characters--if these are reconstructions, then applying Chinese characters seems valid, if shaky.

Well, citations of usage require three, but we have no specific requirement for reconstructions so one source can be enough. But if they are indeed reconstructed then they probably don't belong in mainspace.

Thank you for the guidance!