NERO

Emperor (who fiddled while Rome burned?) d. AD68 (4)

Solution has appeared in 3 crosswords (1 across and 2 down):

• Quick crossword No 16,209 — 2022-04-19 23:00:12
  14D: Roman emperor (who reportedly fiddled) (4)
• Quick crossword No 15,417 — 2019-10-04 23:00:28
  14D: Roman emperor, d. AD68 (4)
• Quick crossword No 15,209 — 2019-02-05 00:00:42
  16A: Emperor (who fiddled while Rome burned?) d. AD68 (4)