Wife leaves old English Duke for jazzy American one? (9)

I believe the answer is:

ellington

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'jazzy american one?' is the definition.
The definition suggests a singular noun which matches the answer.

'wife leaves old english duke' is the wordplay.
'wife' becomes 'w'.
'leaves' is a deletion indicator.
'old english duke' becomes 'wellington' (Duke of Wellington).
'wellington' with 'w' taken away is 'ELLINGTON'.

'for' is the link.

Can you help me to learn more?

(Other definitions for ellington that I've seen before include "One Duke" , "Duke - (Mood Indigo)" , "Duke --, twentieth century band leader" , "Musician" , "Duke (of jazz)" .)

I've seen this clue in The Times.

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