CoAlphaAntiModernistIncelBlogger is a defunct blog and the first known self-described incel blog hosted on wordpress, and was created by Caamib. There may have been a love-shy blog prior to this, by someone unrelated, ie Talmer Shockley. Also, arguably AICP was an incel blog that started in 1997.
It is notable in that the links to this blog were the very first posts on r/incels, for years even, as r/incels was dormant until it was used as a ban evasion of r/truecels.
The contents of the blog were self described 'reactionary', and traditionalist. Co-alpha in the name meant that Caamib felt he was a temporarily embarrassed alpha male, or as Vox Day would call it, 'Sigma male'. He made a long post about incel forum history that was referenced a lot at some point.
The blog was taken down 'as a violation of Wordpress' ToS', as it was not self-hosted. Parts of it are probably on WebArchive.