A queen consort (also empress consort) is the wife of a reigning king (or emperor). A queen consort usually shares her husband’s rank and holds the feminine equivalent of the king’s monarchical titles. Historically, queens consort do not share the king regnant’s political and military powers. Most queens in history were queens consort. A queen regnant is a queen in her own right with all the powers of a monarch, usually becoming queen by inheriting the throne on the death of the previous monarch; they have been far fewer in number.

The wife of a reigning king is called a queen consort. The husband of a reigning queen is usually not called “king consort”, although it was more common in Europe’s past for husbands of queens regnant to become reigning kings (e.g., Philip II of Spain in England, Antoine of Bourbon-Vendôme in Navarre, Ferdinand of Saxe-Coburg-Gotha in Portugal, etc.). He is normally called a prince or prince consort, as with the husbands of Queen Victoria and Queen Elizabeth II, and with prince consort Henrik of Denmark.

Queen Victoria (Alexandrina Victoria; 24 May 1819 – 22 January 1901) was the monarch of the United Kingdom of Great Britain and Ireland from 20 June 1837 until her death. From 1 May 1876, she used the additional title of Empress of India.

Victoria was the daughter of Prince Edward, Duke of Kent and Strathearn, the fourth son of King George III. Both the Duke of Kent and the King died in 1820, and Victoria was raised under close supervision by her German-born mother Princess Victoria of Saxe-Coburg-Saalfeld. She inherited the throne at the age of 18, after her father's three elder brothers had all died without surviving legitimate issue. The United Kingdom was already an established constitutional monarchy, in which the Sovereign held relatively few direct political powers. Privately, she attempted to influence government policy and ministerial appointments. Publicly, she became a national icon, and was identified with strict standards of personal morality.

She married her first cousin, Prince Albert of Saxe-Coburg and Gotha, in 1840. Their nine children and 26 of their 34 grandchildren who survived childhood married into royal and noble families across the continent, tying them together and earning her the nickname "the grandmother of Europe". After Albert's death in 1861, Victoria plunged into deep mourning and avoided public appearances. As a result of her seclusion, republicanism temporarily gained strength, but in the latter half of her reign, her popularity recovered. Her Golden and Diamond Jubilees were times of public celebration.

George VI (Albert Frederick Arthur George; 14 December 1895 – 6 February 1952) was King of the United Kingdom and the Dominions of the British Commonwealth from 11 December 1936 until his death. He was the last Emperor of India, and the first Head of the Commonwealth.

As the second son of King George V, he was not expected to inherit the throne and spent his early life in the shadow of his elder brother, Edward. He served in the Royal Navy and Royal Air Force during World War I, and after the war took on the usual round of public engagements. He married Lady Elizabeth Bowes-Lyon in 1923, and they had two daughters, Elizabeth and Margaret.

George's elder brother ascended the throne as Edward VIII on the death of their father in 1936. However, later that year Edward revealed his desire to marry the divorced American socialite Wallis Simpson. British Prime Minister Stanley Baldwin advised Edward that for political and religious reasons he could not marry Mrs Simpson and remain king. Edward abdicated in order to marry, and George ascended the throne as the third monarch of the House of Windsor.