Bygone kingdom of ancient Britain (6)

I believe the answer is:

wessex

(Other definitions for wessex that I've seen before include "Thomas Hardy's domain" , "Prince Edward, earl of ..." , "Alfred the Great's realm" , "Thomas Hardy's Dorset" , "Of which Alfred the Great was king" .)

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.