See under Wine of Kings - King of Wines.
This unofficial honorary title (Latin: "Vinum Regum - Rex Vinorum") has already been awarded to several wines on the basis of an outstanding, grandiose quality, such as Barolo and Vino Nobile di Montepulciano (both Italy), a red wine from today's appellation Gevrey-Chambertin (France),...
Serious sources on the internet are rare - and Wine lexicon from wein.plus is one such source. When researching for my articles, I regularly consult the wein.plus encyclopaedia. There I get reliable and detailed information.
Thomas Götz
Weinberater, Weinblogger und Journalist; Schwendi