May 9, 1386: On this day, wine exports/imports were established by the Treaty of Windsor. The diplomatic agreement between Portugal and England, known as the Treaty of Windsor, was finalized when King John I of Portugal (House of Aviz) wed Philippa of Lancaster, the first duchess of Lancaster and a member of the Gaunt family. John I was recognized as the undisputed King of Portugal after winning the Battle of Aljubarrota with the help of English archers, signaling the end of the 1383-1385 Crisis interregnum. A mutual support agreement was subsequently formed between the nations under the Windsor Treaty.

May 9, 1976: On this day, Will Lyons was born. He worked as a journalist, having contributed to household name publications such as The Wall Street Journal, and often wrote on the subject of wine for Decanter. Lyons held a passion for wine from his college years through his adulthood and involved himself in wine tastings and wine societies.

May 9, 2001: River Junction AVA was established. The AVA extends between two counties, Stanislaus and San Joaquin. At its establishment, the AVA encompassed 1300 acres of land planted several varietals, including Viognier, Zinfandel, Cabernet Sauvignon, Merlot Chardonnay, and Petite Sirah, are planted. The AVA boasts sandy loam soils excellent for viticulture.

May 9, 2022: This day is National Moscato Day in the United States. The holiday was originated by Gallo Family Vineyards, who have produced the wine variety for nearly a century.

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