How many letters does the top answer for “norse chieftain who became the first duke of normandy (860-931)” have?

The most common answer is rolf (4 letters).

Crossword clue: norse chieftain who became the first duke of normandy (860-931)

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

rolf 4 letters wn-def

Norse chieftain who became the first duke of Normandy (860-931)

rollo 5 letters wn-def

Norse chieftain who became the first duke of Normandy (860-931)