Deletion of House of Isildur

Comment: to List of Middle-earth characters (whether all of them need to go in, I leave to the experts).  applies here. Notability isn't the real issue, but ''"Articles on fiction elements are expected to cover more about "real-world" aspects of the element, such as its development and reception, than "in-universe" details."''. Currently the content is all in-universe, and thus doesn't warrant its own article (it could be adjudged as an inappropriate |CONTENTFORK
Stance: merge
Cited policy: Wikipedia:Notability (WP:NFICT||WP:REDUNDANTFORK)