This is very curious, David. For one thing peaches have never (?) been grown on a commercial scale in England presumably for climatic reasons. However, they have certainly been grown as a gentleman’s hobby and Robert Hogg’s Fruit Manual of 1887 lists around 100 peach varieties which were grown by amateurs in the UK in his day. Confusingly, there is at least one variety each of apple, pear and plum also known by the name “peach”!
For another thing it is practically quite challenging to press peaches and apricots to anything resembling a clear juice. Most such products on the market that I have seen are “nectars” not juices. This would mean that any fermented peach wine using early 19th century technology would probably be quite pulpy (and maybe pulp-fermented and not pressed at all?).
I am pretty sure there has never been a history of peach wine making in Britain (nor, as far as I can tell, anywhere else in Europe). But maybe one of the gentlemen amateurs decided that with the warmer conditions in the new colony, it was worth bundling up a sack of peach stones and shipping them out? As with the Johnny Appleseed story, I imagine the trees are likely to have been seedlings rather than named and grafted varieties. They would bear fruit in a few years after sowing, and then people could see just what they could make of them? Some might be edible, some might do better as a pulpy wine?
I’m just guessing of course …….!!
Andrew