Definition: In this task, we ask you to rewrite a sentence in simple English without changing its general meaning. Essentially, you want to make the sentence easier to read by using simpler words, utilizing more straightforward sentence structures, and omitting non-essential information etc.
Input: 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 .
Output:
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 .