Shelley's dismal daughter back (5)

I believe the answer is:

drear

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'shelley's dismal' is the definition.
I can't judge whether this defines the answer.

'daughter back' is the wordplay.
'daughter' becomes 'd' (genealogical abbreviation).
'back' becomes 'rear' (something's rear is its back).
'd'+'rear'='DREAR'

Can you help me to learn more?

(Other definitions for drear that I've seen before include "Morose" , "grave" , "Literarily gloomy" , "Grim" , "miserable" .)

I've seen this clue in The Telegraph.

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