Mrs Wallis Simpson obtains her divorce decree nisi, which would eventually allow her to marry King Edward VIII of the United Kingdom, thus forcing his abdication from the throne.

In 1936, a constitutional crisis in the British Empire arose when King-Emperor Edward VIII proposed to marry Wallis Simpson, an American socialite who was divorced from her first husband and was pursuing the divorce of her second.

The marriage was opposed by the governments of the United Kingdom and the Dominions of the British Commonwealth. Religious, legal, political, and moral objections were raised. As the British monarch, Edward was the nominal head of the Church of England, which at this time did not allow divorced people to remarry in church if their ex-spouses were still alive. For this reason, it was widely believed that Edward could not marry Simpson and remain on the throne. As a twice-divorced woman, Simpson was perceived to be politically, morally and socially unsuitable as a prospective queen consort. It was widely assumed by the Establishment that she was driven by love of money or position rather than love for the King. Despite the opposition, Edward declared that he loved Simpson and intended to marry her as soon as her second divorce was finalised.

The widespread unwillingness to accept Simpson as the King's consort and Edward's refusal to give her up led to his abdication in December 1936. He was succeeded by his brother Albert, who became George VI. Edward was given the title of Duke of Windsor, and styled Royal Highness, following his abdication, and he married Simpson the following year. They remained married until his death 35 years later.

Wallis, Duchess of Windsor (born Bessie Wallis Warfield; June 19, 1896 – April 24, 1986), known as Wallis Simpson, was an American socialite and wife of the Duke of Windsor, the former King-Emperor 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, during her second marriage, to Ernest Simpson, she met Edward, the then Prince of Wales. Five years later, after Edward's accession as King of the United Kingdom, Wallis divorced her second husband 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, the former king was made Duke of Windsor by his brother and successor, King George VI. Wallis married Edward six months later, after which she was formally known as the Duchess of Windsor, but was not allowed to share her husband's style of "Royal Highness".

Before, during, and after the Second World War, the Duke and Duchess of Windsor were suspected by many in government and society of being Nazi sympathizers. In 1937, they visited Germany and met Adolf Hitler. In 1940, the Duke was appointed governor of the Bahamas, and the couple moved to the islands until he relinquished the office in 1945. In the 1950s and 1960s, the Duke and Duchess shuttled between Europe and the United States, living a life of leisure as society celebrities. After the Duke's death in 1972, the Duchess lived in seclusion and was rarely seen in public. Her private life has been a source of much speculation, and she remains a controversial figure in British history.