“That fellow Weston,” said Brummell, “is an inimitable fellow — a little defective perhaps in his ‘linings,’ but irreproachable for principle and button-holes. He came to London, Sir, without a shilling; and he counts more realized thousands than our fat friend does ‘frogs’ on his Brandenburg. He is not only rich, but brave; not only brave, but courteous; and not alone courteous, but candid. – Beau Brummel
Man
John Weston, Regency London’s most expensive tailor and draper to George, Prince of Wales, was frequently mentioned by Georgette Heyer in her novels. While Ms. Heyer peppered her novels with Weston’s name, I was actually unable to find much about him. This caption from the exhibit a the Museum of London, describes the greatcoat at right: 1803, tailored by John Weston of 38 Old Bond Street.
The prince was passionately interested in clothes and patronised London’s most skilful craftsmen. This slim fitting double-breasted coat, which has a silk velvet collar, is made of high quality British wool facecloth. Charles Jennens, a London button maker, supplied the gilt buttons.
The coat was discovered at Coutts Bank, where the tailor had deposited it for an unknown client, in 1956. A letter accompanying the coat described it as, ‘an exceed[ingly] good blue cloth great coat … made in ev[e]ry respect in the best manner’.
Men of fashion felt a sort of religious awe as they passed over the threshold of Weston, Brummell’s tailor, in Old Bond-street
Read more about London’s tailors at these links:
- Jean Louis Bazalgette: Fascinating biography of one of the Prince Regent’s earlier, lesser known tailors. (Cached information.)
Jane Austen's World 
Unfortunately, the link to Jean Louis Bazalgette’s web-bio is now broken. This because (a) it was getting very out out of date and (b) I intend to publish it in book form. I put it on the web hoping to get significant feedback that would help the project, but this has been so scanty that I decided it wasn’t worth while. Sorry!
See the link above to my new log about Louis Bazalgette.
http://chasbaz.posterous.com/
He seems to have been almost exclusively Prinny’s tailor from about 1780 to at least 1795, and supplied him with thousands of garments.