Forename of Turner (4)

I believe the answer is:

tina

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This clue could be a double definition.

'forename' is the first definition.
Both the answer and definition are singular nouns.
Maybe they are linked in a way I don't understand?

'turner' is the second definition.
(Tina Turner, famous singer)

'of' is the link.

Can you help me to learn more?

(Another definition for tina that I've seen is " Ain't this a girl?".)

I've seen this clue in the Evening Standard.

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