Royal arms of Hanover - St Peter - Empingham, Rutland - Coats of Arms on Waymarking.com

Hanovarian royal coat of arms in St Peter's church, Empingham.

Undated - probably King George III.

"The House of Hanover (German: Haus Hannover), whose members are known as Hanoverians is a German royal house that ruled Hanover, Great Britain, and Ireland at various times during the 17th through 20th centuries. The house originated in 1635 as a cadet branch of the House of Brunswick-Lüneburg, growing in prestige until Hanover became an Electorate in 1692. George I became the first Hanoverian monarch of Great Britain and Ireland in 1714. At Victoria's death in 1901, the throne of the United Kingdom passed to her eldest son Edward VII, a member of the House of Saxe-Coburg and Gotha. The last reigning members of the House lost the Duchy of Brunswick in 1918 when Germany became a republic.

The formal name of the house was the House of Brunswick-Lüneburg, Hanover line. The senior line of Brunswick-Lüneburg, which ruled Brunswick-Wolfenbüttel, became extinct in 1884. The House of Hanover is now the only surviving branch of the House of Welf, which is the senior branch of the House of Este. The current head of the House of Hanover is Ernst August, Prince of Hanover.

Monarchs of Great Britain, Ireland, and Hanover

George Louis became the first British monarch of the House of Hanover as George I in 1714. The dynasty provided six British monarchs:

Of the Kingdoms of Great Britain and Ireland:

George I (r. 1714–27) (Georg Ludwig = George Louis)
George II (r. 1727–60) (Georg August = George Augustus)
George III (r. 1760–1820)

Of the United Kingdom of Great Britain and Ireland:

George III (r. 1760–1820)
George IV (r. 1820–30)
William IV (r. 1830–37)
Victoria (r. 1837–1901).

George I, George II, and George III also served as electors and dukes of Brunswick-Lüneburg, informally, Electors of Hanover (cf. personal union). From 1814, when Hanover became a kingdom, the British monarch was also King of Hanover.

Main article: House of Hanover (visit link)

The Hanoverian succession came about as a result of the Act of Settlement 1701, passed by the Parliament of England, which excluded "Papists" (i.e. Roman Catholics) from the succession. In return for access to the English plantations in North America and the West Indies, the Hanoverian succession and the Union were ratified by the Parliament of Scotland in 1707.

After the death of Anne, with no living children, her second cousin, George Louis, was the closest heir to the throne who was not Catholic. George was the son of Sophia of Hanover—granddaughter of James VI and I through his daughter Elizabeth."

SOURCE - (visit link)