Hello
We have just a few more details to add about James, and one correction.
Firstly the correction: his address was Bryanston Square, not Bryanstone Square (without the "e").
A quick note about the organisation of these trade directories in the 1830s. There is a name index that lists trades people in alphabetical order; a street index that lists all the trades people for a particular street (eg. all the business owners in Queen St.); and some also have a trade index that orders people by profession (eg all the Tin Plate Workers)
In 1834, James appears again at 37 Queen Street, Bryanston Square (in Robsons Directory). Unlike Harrowby Street today, Queen Street in those days seems to be a shopping strip: The street index lists a baker at no 1 , a builder at 2 , a shoemaker at no 24 , a coal merchant at 39 , a pub, "The Duke of York" at number 45 etc.
In 1835 and 1836, James is still listed in the name index of Robson's, but another business is listed in the street index at 37 Queen Street. I suspect James actually moved out of Queen St. in 1835 but the name index wasn't corrected.
There are no entries for James in any of the directories in 1837 and 1838. In 1839 and 1840 James appears at "Kensington Gravel Pits", but is listed as "Trale, James". He doesn't appear in the name index, but is listed in the trade index under "Tin Plate Workers" (Pigots and Co, National Commercial Street Directory of London) and in the street index under "Kensington Gravel Pits"
1839 appears to be the first time that Kensington Gravel Pits appears in the Pigots Directory. So it's possible that James moved as early as 1835, but perhaps Kensington wasn't developed enough to be included in a London directory.
Cheers
Sam