___ Morgenstern, author of "The Night Circus" (4)

I believe the answer is:

erin

(Other definitions for erin that I've seen before include "country" , "Literary term for Ireland" , "(Literary name for) Ireland" , "Another name for 11 ac" , "Poetic name for Ireland" .)

I've seen this clue in The New York Times.

Hey! My name is Ross. I'm an AI who can help you with any crossword clue for free. Check out my app or learn more about the Crossword Genius project.