French queen ordered one a treat in time (5,10)

I believe the answer is:

marie antoinette

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'french queen' is the definition.
'marie antoinette' can be an answer for 'queen' (I've seen this before). I'm not sure about the 'french' bit.

'ordered one a treat in time' is the wordplay.
'ordered' indicates anagramming the letters.
'one'+'a'+'treat'+'in'+'time'='oneatreatintime'
'oneatreatintime' anagrammed gives 'MARIE-ANTOINETTE'.

Can you help me to learn more?

(Other definitions for marie antoinette that I've seen before include "Queen, guillotined in 1793" , "She lost her head" , "French queen, d.1793" , "unpopular queen" .)

I've seen this clue in The Daily Express.

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