Protagonist of ABC Fantasy Drama Once Upon a Time

This page is the CodyCross answer for the clue below from Nordic Wonders, Group 1954, Puzzle 3 (Althing Assembly).

Question is: Protagonist of ABC Fantasy Drama Once Upon a Time

and the answer is: EMMASWAN

Word Meaning:

EMMA — (British, dated, World War I, signalese) M in RAF phonetic alphabet

Definitions from Wiktionary.