Deliver one held by crazy attendant (8)

I believe the answer is:

handmaid

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'attendant' is the definition.
(I have seen 'Female attendant' mean 'handmaid' so perhaps 'attendant' could also mean 'handmaid')

'deliver one held by crazy' is the wordplay.
'deliver' becomes 'hand' (I can't justify this - if you can you should give a lot more credence to this answer).
'one' becomes 'i' (Roman numeral).
'held by' indicates putting letters inside.
'crazy' becomes 'mad' (synonyms).
'i' inserted into 'mad' is 'maid'.
'hand'+'maid'='HANDMAID'

Can you help me to learn more?

(Other definitions for handmaid that I've seen before include "Female attendant" , "Female servant" , "servant - with 2d" .)

I've seen this clue in The Daily Express.

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