King of Great Britain in the context of "Monarch of Scotland"

George III (George William Frederick; 4 June 1738 – 29 January 1820) was King of Great Britain and Ireland from 25 October 1760 until his death in 1820. The Acts of Union 1800 unified Great Britain and Ireland into the United Kingdom of Great Britain and Ireland, with George as its king. He was concurrently duke and prince-elector of Hanover in the Holy Roman Empire before becoming King of Hanover on 12 October 1814. He was the first monarch of the House of Hanover who was born in Great Britain, spoke English as his first language, and never visited Hanover.

George was born during the reign of his paternal grandfather, King George II, as the first son of Frederick, Prince of Wales, and Princess Augusta of Saxe-Gotha. Following his father's death in 1751, Prince George became heir apparent and Prince of Wales. He succeeded to the throne on George II's death in 1760. The following year, he married Princess Charlotte of Mecklenburg-Strelitz, with whom he had 15 children. George III's life and reign were marked by a series of military conflicts involving his kingdoms, much of the rest of Europe, and places farther afield in Africa, the Americas and Asia. Early in his reign, Great Britain defeated France in the Seven Years' War, becoming the dominant European power in North America and India. However, Britain lost 13 of its North American colonies in the American War of Independence. Further wars against revolutionary and Napoleonic France from 1793 concluded in the defeat of Napoleon at the Battle of Waterloo in 1815. In 1807, the transatlantic slave trade was banned from the British Empire.

George I (George Louis; German: Georg Ludwig; 28 May 1660 – 11 June 1727) was King of Great Britain and Ireland from 1 August 1714 and ruler of the Electorate of Hanover within the Holy Roman Empire from 23 January 1698 until his death in 1727. He was the first British monarch of the House of Hanover.

Born in Hanover to Ernest Augustus and Sophia of Hanover, George inherited the titles and lands of the Duchy of Brunswick-Lüneburg from his father and uncles. In 1682, he married his cousin Sophia Dorothea of Celle, with whom he had two children; he also had three daughters with his mistress Melusine von der Schulenburg. George and Sophia Dorothea divorced in 1694. A succession of European wars expanded George's German domains during his lifetime; he was ratified as prince-elector of Hanover in 1708.

George II (George Augustus; German: Georg August; 30 October / 9 November 1683 – 25 October 1760) was King of Great Britain and Ireland, Duke of Brunswick-Lüneburg (Hanover) and a prince-elector of the Holy Roman Empire from 11 June 1727 (O.S.) until his death in 1760.

Born and brought up in northern Germany, George is the most recent British monarch born outside Great Britain. The Act of Settlement 1701 and the Acts of Union 1707 positioned his grandmother Sophia of Hanover and her Protestant descendants to inherit the British throne. George married Princess Caroline of Ansbach, with whom he had eight children. After the deaths of George's grandmother and Anne, Queen of Great Britain, George's father, the Elector of Hanover, ascended the British throne as George I in 1714. In the first years of his father's reign as king, Prince George was associated with opposition politicians until they rejoined the governing party.

The personal union between Great Britain and Hanover existed from 1714 to 1837. During this time, the Elector of Braunschweig-Lüneburg or King of Hanover was also King of Great Britain. With the Act of Settlement in 1701, the English Parliament created the basis for the Protestant succession of the House of Hanover to the throne in the Kingdom of England, later the Kingdom of Great Britain. Different succession rules led to the dissolution of the personal union.