William F. Walsh (December 20, 1961 – March 15, 2017) was a copy editor at The Washington Post.[1] He spoke on copy editing and was a regular presenter at annual conferences of the American Copy Editors Society. His books include Lapsing into a Comma (2000); The Elephants of Style (2004); and Yes, I Could Care Less (2013).
Walsh also worked on the Slot, a website for copy editors that he founded in August 1995.[2]
Walsh personal was invoked but never defined (see the help page).