I've been going through the catalogues, can't find anything that is a particularly good match for appearance/lateness, Winter Pearmain comes the closest, (based on description in Joan Morgan's The Book of Apples).
The other one is from the enormous and ancient pear tree growing on the wall of my in-law's 17th century farmhouse. It only started to produce fruit a few years ago, after I gave them a Conference to see if a pollination partner would induce it to produce fruit. This worked, and some steady work on pruning the monster has gradually brought it back into producing healthy fruit (rather than scabby little things of the first few years).
The tree is probably at least 70 years old, probably older. It's grafted on to Pyrus communis stock. I have read that can have a negative effect on fruit flavour/quality, but without grafting some onto a quince stock, I can't really make a comparison.
The fruit is loosely pyriform, sometimes highly irregular. It has a slightly musky flavour, and a slightly bitter flavour permeates the flesh as well as the skin. Some of the qualities remind me of Gorham, but the season is far too late, they are rock hard through most of October, just beginning to soften now. The descriptions sound like Vicar of Winkfield but it's rather earlier and more highly russetted than the latter. I will have to get Bunyard out and go through all the old varieties again I think.