Hi Ian,
Thanks for all of that. Very interesting. Well, you seem to have looked in all the same books that I have. You do not list a Dundee Directory for 1841-42 (if one ever existed); there was no copy in the Dundee Archivist's office. And you evidently also have a copy of Margaret Constable's will. Don't you think it's strange that she seems unaware of her son Alexander's marriage? And the import of the Dundee Directories seems to be that Alexander had left the business in Dundee by 1842/43. Perhaps he told a fib about going to California?
I found this on The Scotsman's digital archive:
http://edu.archive.scotsman.com/article.cfm?id=TSC/1851/07/26/Ar00126Says this (from The Scotsman: Saturday 26th July, 1851)
ELIGIBLE OPENING
JEWELLER, SILVER PLATE, WATCH-MAKING &c
MRS WILLIAM CONSTABLE respectfully intimates to those valued Friends and the Public who so long supported her late Husband, and of late herself, in the above business, that a recent family bereavement has forced upon her the thoughts of giving it up, should a suitable offerer come forward for a Lease of the Shop, and to take Stock, Fixtures, &c, at valuation.
Mrs W.C. hopes her Friends and the Public will accept of her sincere and grateful thanks for all the kindness she has experienced at their hands.
The above business has been successfully carried on for above forty years in the same Shop, No. 7 High Street, Dundee, and a more eligible opening in the Jewellery, Silver Plate, and Watchmaking business rarely occurs. Dundee, it is well known, is one of the most flourishing and increasing towns in the kingdom, and the said Shop is in a first-rate situation.
Those intending to treat will please address to Mrs W. Constable, 7 High Street, Dundee.
Dundee, 3d July 1851.
What I would really like to know would be the names of the journeymen who might have worked in Constable's shop in the late 1820s, early 1830s. But goodness knows how I can find that out. And I would like to know what William Constable was doing in London around 1795. It seems likely that he would have done an apprenticeship in Scotland, but he might have then spent a couple of years learning the business side of things in London (on behalf of his master?).
But I will let you know if and when I turn up anything new.
Thanks again,
inarcadia