Wife of William S., say, raised hell (7)

I believe the answer is:

gehenna

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'hell' is the definition.
(I know that Gehenna is a type of hell)

I can't explain the rest of the clue.

(Other definitions for gehenna that I've seen before include "Judaism's Hell" , "pit" , "underworld" , "place of punishment" , "hellish situation" .)

I've seen this clue in The Times.

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