Crossword Genius

US actor following working lawyer there (5)

Ross

I believe the answer is:

fonda

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'us actor' is the definition.
'fonda' can be an answer for 'actor' (I've seen this before). I am unsure of the 'us' bit.

'following working lawyer there' is the wordplay.
'following' becomes 'f' (used when citing page numbers etc).
'working' becomes 'on' (on can mean working or activated).
'lawyer there' becomes 'da' (I can't explain this - if you can you should give a lot more credence to this answer).
'f'+'on'+'da'='FONDA'

Can you help me to learn more?

(Other definitions for fonda that I've seen before include "Jane -, US actress" , "American family of film actors" , "Actor" , "See 3" , "Actress or her father" .)

I've seen this clue in The Telegraph.
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