The record of the National Fruit Collection, at Brogdale in Kent, describes it1:
Originated in England and known to have been in existence in the late 1500s. The trees at Brogdale are indistinguishable from Herefordshire Pearmain. A dessert apple of quite reasonable quality as a garden variety. Fruit has a pleasant, slightly aromatic flavour.
Sources
Autumn Pearmain (accession 1921 - 019), National Fruit Collection, Brogdale, Kent (Defra).
Supports: the description quoted; the use; the fruit's size, shape and colours and the flesh, from the collection's characterisation; the picking time at Brogdale (late september); the other names.