The three overlapping Grand Cru AOCs of the Corton hill, Corton for red wine from Pinot Noir and Charlemagne and Corton-Charlemagne for white wine from Chardonnay, are obviously in need of some explanation. In fact, the Corton hill is one of the most confusing appellations in Burgundy, if not the world, taking a back seat perhaps only to the myriad Grands Crus of the Montrachet areas.
The Corton appellation largely covers the lower parts of the hill, and makes almost entirely Pinot Noir-based red wine. It is the most confusing of the three due to its use of lieux-dits to specify which part of the excessively large vineyard the wine was made in. Labels such as Corton-Renardes, then, are common. Higher up on the hill, the Corton-Charlemagne Grand Cru exists for Chardonnay-based white. Some of the area is shared by Charlemagne, a little-used Grand Cru for Chardonnay.
This confusion is unfortunate but unavoidable. Hopefully this brief summary has helped you to work out your objections to the Corton hill appellations. And remember that all the appellations are also shared by the villages of Aloxe-Corton, Ladoix-Serrigny, and Pernand-Vergelesses so that they in fact lie within neither one of these three entirely.
With your confusion hopefully cleared away, please proceed to our summaries of each Grand Cru: