his phrase is named May the Fourth Be With You. It was created by fans in 1970, but when it was not that popular, it gained popularity in 1979 when the London Evening congratulated Margaret Thatcher for becoming the first lady Prime Minister of the United Kingdom.

Who Was Margaret Thatcher?
Margaret Hilda Thatcher, Baroness Thatcher, was a conservative politician who was the first lady Prime Minister of the United Kingdom from 1979 to 1990.

She was the first Prime Minister of the United Kingdom and served the longest tenure as Prime Minister.