The Public Domain class of 2018 — authors with significant works entering the public domain next year — includes Aleister Crowley, Rene Magritte, Siegfied Sassoon and the other Winston Churchill.
Winston Churchill was an American best-selling novelist of the early 20th century. He is nowadays overshadowed, even as a writer, by a certain cigar-toting British statesman of the same name, with whom he was acquainted, but not related.
Here's the CSPD list of works that should have entered the public domain this year, but didn't thanks to congressional servicing of Disney.