Q: In this task, we ask you to elaborate the sentence without changing its general meaning. You can do so by explaining further the input sentence, using more precise wording, adding qualifiers and auxiliary information etc.
King George III ( Born George William Frederick 4 June 1738 29 January 1820 ) was King of Great Britain and Ireland from 25 October 1760 until 1 January 1801 .
A:
George III ( George William Frederick ; 4 June 1738 29 January 1820 ) was King of Great Britain and King of Ireland from 25 October 1760 until the union of the two countries on 1 January 1801 , after which he was King of the United Kingdom of Great Britain and Ireland until his death in 1820 .