alternatehistory.com

The Madness of King George, or, 1776: Civil War Boogaloo, or, REX POPULI

Kingdom of Great Britain, 1707-1776, Hereditary Monarchy

1707-1714: Anne (Stuart)
1714-1727: George I (Hanover)
1727-1760: George II (Hanover)
1760-1776: George III (Hanover)*

Kingdom of All Britons, 1776-present, Electoral Monarchy

1776-1791: vacant ('Congressional Parliament')*
1791-1795: George IV Hanover (Non-Partisan)
1790 def. unopposed
1795-1799: George V Washington (Non-Partisan)
1794 def. George IV Hanover (Non-Partisan)
1799-1803: Henry IX Erskine (Constitutionalist)
1798 def. Charles James Fox (Radical)
1803-1806: Charles III Fox (Radical)
1802 def. William Pitt (Constitutionalist)
1806-1807: Thomas I Paine (Radical)
1807-1815: Alexander IV Hamilton (Constitutionalist)
1806 def. Charlotte Hanover (Non-Partisan), Thomas I Paine (Radical)
1810 def. William Godwin (Radical)
1815-1823: Thomas II Cochrane (Constitutionalist)
1814 def. unopposed
1818 def. Andrew Jackson (Constitutionalist), Charlotte Hanover (Constitutionalist), John Q. Adams (Constitutionalist)
1823-1831: Andrew I Jackson (Democratic)
1822 def. George Canning (Constitutionalist)
1826 def. Arthur Wellesley ('National' Constitutionalist), Richard Vyvyan ('Ultra')

*George III technically continued to reign as King until the new Constitution of the Kingdom of All Britons was drawn up and elections held for the newly elective monarchy. The Congressional Parliament, once in rebellion did not recognise George III as legitimate and the throne was deemed unoccupied in the intervening period. George III would continue to claim his lost British throne until the end of his days. The Hanoverian monarchs would eventually withdraw back to Hanover under Princess Charlotte's son George.