How many letters does the top answer for “city in county louth” have?

The most common answer is drogheda (8 letters).

Crossword clue: city in county louth

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

drogheda 8 letters wd-fact-v3

in 1649 the place was captured by Oliver Cromwell, who massacred the Catholic inhabitants

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