I was reading a book from 1900 that referred to a bestseller of the day, Richard Carvel by Winston Churchill. I said, as perhaps you are saying now, “Is that the Winston Churchill?” No, it isn’t. There was an American novelist named Winston Churchill (born in St. Louis in 1871) and when the British leader (born 1874 at Blenheim Palace) began writing books of his own, he was concerned about confusion with the American. The two men wrote each other to clear things up, like this:
Mr. Winston Churchill is extremely grateful to Mr. Winston Churchill for bringing forward a subject which has given Mr. Winston Churchill much anxiety.
Read one of the letters here. Here’s a bit more on Churchill, the novelist.
As I understand it, Prime Minister Churchill always wrote as “Winston S. Churchill,” in order to avoid confusion.