How many letters does the top answer for “what was the pen name of novelist, mary ann evans” have?

The most common answer is eliot (5 letters).

Crossword clue: what was the pen name of novelist, mary ann evans

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

eliot 5 letters otdb

British writer of novels characterized by realistic analysis of provincial Victorian society (1819-1880)

george 6 letters otdb

Elector of Hanover and the first Hanoverian King of Great Britain and Ireland from 1714 to 1727 (1660-1727)