Dean's dotty daughter? (4)

I believe the answer is:

edna

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'daughter?' is the definition.
Both the definition and answer are singular nouns.
Perhaps you can see an association between them that I don't see?

'dean's dotty' is the wordplay.
'dotty' is an anagram indicator (dotty can mean mad).
'dean' with letters rearranged gives 'EDNA'.

Can you help me to learn more?

(Other definitions for edna that I've seen before include "Girl for Dane" , ". . . . O'Brien, ... Saint Vincent Millay" , "Barry Humphries' Dame" , "Famous dame" , "- O'Brien, Irish writer" .)

I've seen this clue in the Evening Standard.

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