Wikipedia:Articles for deletion/Kornigou
Great finds there.  It seems that the articles you linked to from "Viltis" and the one from "Bro Nevez" are actually the exact same article, that was just printed in two different publications, and is actually the origin of this Wikipedia article - the text about the Kornigou here was copied and pasted directly from that.  So, at the very least, the article needs to be rewritten to avoid any  issues.  That first source, from Imbas, seems to be from a defunct neo-pagan group, and I am not convinced it should be considered a reliable source, but the article from Viltis/Bro Nevez, and the French books all appear to be legitimate information.  I will leave this discussion up for the time being to give other editors time to weigh in if these short mentions of the Kornigou in these sources is enough to pass the , and if it looks like there is no strong proponents for deletion, I will withdraw the nomination
— User:Rorshacma, 19:46, 25 April 2019 (UTC)
Stance: comment
Cited policy: WP:COPYVIO||WP:GNG (Wikipedia:Copyright violations)