Wallis, Duchess of Windsor (born Bessie Wallis Warfield, later Spencer and then Simpson; June 19, 1896 – April 24, 1986), was an American socialite and the wife of Prince Edward, Duke of Windsor (former King Edward VIII). Their intention to marry and her status as a divorcée caused a constitutional crisis that led to Edward's abdication.
Wallis grew up in Baltimore, Maryland. Her father died shortly after her birth, and she and her widowed mother were partly supported by their wealthier relatives. Her first marriage, to United States Navy officer Win Spencer, was punctuated by periods of separation and eventually ended in divorce. In 1931, while married to her second husband Ernest Simpson, she met Edward, the heir apparent to the British throne. Five years later, after Edward's accession as King of the United Kingdom, Wallis divorced Ernest to marry Edward.
The King's desire to marry a woman who had two living ex-husbands threatened to cause a constitutional crisis in the United Kingdom and the Dominions, ultimately leading to his abdication in December 1936 to marry "the woman I love". After abdicating, Edward was made Duke of Windsor by his brother and successor, George VI.