Feared fifth-century leader (6)

I believe the answer is:

attila

(Other definitions for attila that I've seen before include "He attacked the Romans" , "5th century king of the Huns who sacked Rome" , "King of the Huns, d. 453" , "First-century king of the Huns" , "Hunnish conqueror" .)

I've seen this clue in The New York Times.

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