Chardonnay is one of the most popular grapes in the wine industry today. Over 34 different clones exist and it is the fifth most planted varietals in the world. It even has its own International Day on May 21. Chardonnay is a cross between Pinot Noir, Pinot Blanc, and Goulais Blanc, a varietal that is very obsure now and was originally from Croatia..
It is said that the Romans brought the Goulais Blanc from Croatia to France where it probably accidentally pollinated with Pinot Noir and Pinot Blanc. This likely occured in a small town in southern Burgundy called Maconnis. Chardonnay was then loved by Cistern monks who built a wall around their vineyard Clos de Vougeot to keep their fields of Chardonnay safe. It has since moved to every grape growing country.
Wine Celar Insider.