ITV series based on the memoir of jewel thief, __ Hannington (4)

I believe the answer is:

joan

(Other definitions for joan that I've seen before include "'Saint - - ' (Shaw play)" , ". . . . of Arc, French warrior saint" , "- Plowright, actress" , "Orleans girl" , "Darby and --, -- of Arc" .)

I've seen this clue in The Guardian.

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