Trouble is over law suit's possible provenance (6,3)

I believe the answer is:

savile row

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'suit's possible provenance' is the definition.
I know nothing about this answer so I can't tell whether it can be defined by this definition.

'trouble is over law' is the wordplay.
'trouble' indicates an anagram.
'is'+'over'+'law'='isoverlaw'
'isoverlaw' with letters rearranged gives 'SAVILE ROW'.

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(Other definitions for savile row that I've seen before include "Mayfair street" , "Fitting way" , "fitting part of London" , "Street noted for tailoring" , "Well-known street" .)

I've seen this clue in The Telegraph.

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