George III of the United Kingdom

George III (4 June 1738 – 29 January 1820), also known as George William Frederick, was King of Great Britain and Ireland from 25 October 1760 until the unification of those two states on 1 January 1801, following which he was known as King of the United Kingdom until his death.

King George led Great Britain during the Seven Years' War, where Britain stood victorious over France, and during the conflict of the American Revolutionary War. Due to the latter, the Thirteen Colonies of America that Great Britain had accumulated were lost to George and subsequently achieved their own independence, becoming the United States.

Reference

• Assassin's Creed III