Crossword Genius

Welshwoman has knowledge about whiskey (4)

Ross

I believe the answer is:

gwen

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'welshwoman' is the definition.
Both the definition and answer are singular nouns.
Maybe you can see a link between them that I can't see?

'knowledge about whiskey' is the wordplay.
'knowledge' becomes 'gen' (I've seen this before).
'about' is an insertion indicator.
'whiskey' becomes 'W' (phonetic alphabet: alpha, bravo, charlie etc.).
'gen' going around 'w' is 'GWEN'.

'has' acts as a link.

Can you help me to learn more?

(Other definitions for gwen that I've seen before include "Sister of Augustus John" , "name" .)

I've seen this clue in The Sun.
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