As an answer to the New Yorker magazine's, "20 Under 40" book list, Ward Six posted a new list of chosen proven authors, "10 Over 80: Writers to Go Back and Read."
Visitors to the site make comments and add names. At one point, the original poster responds with a mea culpa:
"I forgot Ursula LeGuin because I temporarily confused her with Madeleine L'Engle and thought she was dead."
I have difficulty distinguishing them as well. Ditto for Merle Streep and Glenn Close and I still don't know if Abe Vigoda is dead or alive.