Lad from Cumbrian town, a street trader

I believe the answer is:

barrow boy

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'trader' is the definition.
(I have seen 'Itinerant trader' mean 'barrow boy' so perhaps 'trader' could also mean 'barrow boy')

I can't explain the rest of the clue.

Can you help me to learn more?

(Other definitions for barrow boy that I've seen before include "Lad from shipbuilding centre" , "Street vendor" , "Costermonger" , "Itinerant trader" , "street-seller?" .)

I've seen this clue in The Telegraph.

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