Deletion of Triune Kingdom of Croatia

Comment: there are many references and other material here that might be useful, so it would be good if an effort could be made to examine and  as much as possible, and to merge it into other articles as appropriate, being careful to follow , if the article is to be permanently deleted. In other words, "don't throw out the baby with the bathwater". There are several overlapping articles, i.e. Triune Kingdom, Triune Kingdom of Croatia, and Kingdom of Croatia-Slavonia, each of which say that ''The Triune Kingdom of Croatia, Slavonia and Dalmatia'' is a synonym or MOS:ALTNAME for their article's title and subject. They each give quite different and contradictory accounts of what it means, and I find that it's not possible to get a clear understanding of it. I hope that it can be rectified, as the way it is now I think is confusing to readers
Stance: comment
Cited policy: Wikipedia:Editing policy (WP:PRESERVE||WP:NPOV)