After some wrestling, a little bad language, a bit of a sweat, an unusually long time chasing an end around a rim, some cable tie based bondage and considerable delayed satisfaction I am now relaxing with tender palms and a glass of port.
... my marathon winters have arrived and been fitted.
Rear wheel (XM317) was much harder to get on than the cheap original front wheel.
I have squirted WD40 at an embarrassingly rusty chain and will take it out to play tomorrow.