Both were Jews...

Only a PS - The earliest 'Ivy' clothes talk online I ever saw was John Gall & Mark Collins on Modculture. I got tipped off about them by a Moddy mate. That pre-dates 'Trad' by quite a while. I 'borrowed' many of their tricks adding a few twists of my own to annoy the uptight Yanks. Sexuality stuff especially.

Boppie, I think I'm building up to a post /rant here on this whole origins thing  when I'm not so busy.

Hmmm.

They manage to look both godawful and fantastic at the same time.

They don't photograph very well at all but look like a million dollars when worn.

Tons of things are 'off' with them when compared to classic sack jackets.

The construction does contain some serious tailoring.

I haven't seen a single serious contender to them and they rarely turn up second hand.

I walked through a beech hedge and crawled under a caravan in mine at the weekend to rescue a mauled pigeon. Try that in any other sports jacket.

I can only concur that the fit does benefit from a wash and even a spin in the dryer.

Is rescuing mauled pigeons a proper sport in UK or just  a hobby or casual activity?

If you have a Keydge with the brown toy buttons, it's vitally important that you swap them for something decent, smoky genuine mother-of-pearl or something. It makes all the difference. Get a lapel buttonhole done too, by all means, but sort the buttons. Go through some online video tutorials if you don't know how to sew a button. It's possible even for the least of men to learn it, honestly, and it's worth it.