How many letters does the top answer for “author of wolf hall” have?

The most common answer is mantel (6 letters).

Crossword clue: author of wolf hall

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

mantel 6 letters wd-fact-v3

shelf that projects from wall above fireplace

author of annie hall 50% similar → allen

author of the sea-wolf 50% similar → london

wrote wolf hall 50% similar → mantel