How many letters does the top answer for “wrote east of eden” have?

The most common answer is steinbeck (9 letters).

Crossword clue: wrote east of eden

1 answer found in Letterora's clue database (Wikidata facts, Open Trivia DB, WordNet and Webster definitions — all licensed sources).

steinbeck 9 letters wd-fact-v3

United States writer noted for his novels about agricultural workers (1902-1968)

wrote eden 67% similar → lem

author of east of eden 50% similar → steinbeck

wrote martin eden 50% similar → london