References to the confusion between these two roses can be found in at least two of the rose books that I own:
ROSES by Peter Beales-published in Great Britain in 1992
PAGE 29
After writing of the importance of 'Lady Mary Fitzwilliam' as a stud rose he continues...
Quote;"I cannot exclude a personal anecdote at this juncture.
It is about a small illustration that appeared in a small book entitled LATE VICTORIAN ROSES,written by myself,with photographs by Keith Money.
This picture was of an unidentified variety discovered by Keith at Caston in 1975.
We did not state dogmatically that it was 'Lady Mary Fitwilliam',but it was hoped it might create some interest,either confirming that it was 'Lady Mary',or suggesting a suitable name.
Two letters came from Australia,both expressing the opinion that the rose was indeed 'Lady Mary Fitzwilliam'.
One was from Deane Ross,a professional rose grower whose father had started the business in 1906,and who,when shown the photograph,was an alert gentleman of eighty seven years.
Deane wrote:'When I showed him your book he said,"Now that is Lady Mary Fitzwilliam."'
Deane went on to say that his father had grown this variety extensively in his early years as a nurseryman,and remembered it well.
This does not necessarily authenticate the rose-photographs are not the easiest means of identification-but it is particularly interesting,since later I acquired a colour print of 'Lady Mary Fitzwilliam' which strengthens my belief that the rose may well have been rediscovered.
It came from Mrs Margaret Meier,a neice of Henry Bennett's great-granddaughter, Mrs Ruth Burdett;and Mrs Burdett added support to this belief by informing me that Henry Bennett's son Charles emigrated to Australia and started commercial rose growing there at the turn of the century,doubtless taking with him
ample stocks of his father's roses."
end quote.

There is also a photo on page 29 captioned 'Lady Mary Fitzwilliam' with four blooms visible-it is difficult to make out the colour but seems to resemble 'Mrs Wakefield Christie Miller'.

PAGE 389
The entry for 'Lady Mary Fitzwilliam' reads;
Bennett UK 1928
'Devoniensis'x'Victor Verdier'
Large,freely produced,soft pink flowers,flushed deeper pink.
Shapely,high centred and scented.Not overly vigorous but quite bushy.
Ample,good,dark green foliage.This is a famous old rose;parent to many of the early British Hybrid Teas.
A rediscovery at Caston,Norfolk,by Keith Money in 1975.

PAGE 394
The entry for 'Mrs Wakefield Christie Miller' reads;
McGredy UK 1909
Flowers High centred,of soft pink-shaded-salmon with brighter reverses.
Foliage leathery,light green.Growth short,bushy.

There is no photograph of 'Mrs wakefield Christie Miller'

The second book is
MACOBOY'S ROSES by Stirling Macoboy published in Australia in 1993.
PAGE 246
Entry for 'Lady Mary Fitzwilliam' reads;
Named for a grand-daughter of King William IV,'Lady Mary Fitzwilliam'was raised by Henry Bennett in 1882.
It was greeted with derision:'A weaker and more unsatisfactory grower would be impossible to find',sneered one writer of the day.
However,it is one of the most important ancestors of Modern Garden Roses,and it is still a lovely fragrant bloom in soft pink.
Foliage is pale green and matt.
Beware of imposters-the lovely 'Mrs Wakefield Christie Miller' is sometimes sold as 'Lady Mary Fitzwilliam'.

To the right of the entry is a photograph captioned 'Lady Mary Fitzwilliam'-this photo shows a rose whos colour resembles that of 'Mrs wakefield Christie Miller'.

PAGE 297
Entry for 'Mrs Wakefield Christie Miller' reads;
They do not name them like that any more!It is probably nearer true modern owners of such names are apt to say,'Oh,do call me Fiona'.There was no such informality in 1909,when Sam McGredy II intrduced 'Mrs Wakefield Chritie Miller'to the public.
Her recent revival was originally due to her masquerading for a while as 'Lady Mary Fitzwilliam'.
She is a delight in her own right,the large,fragrant,two toned pink blooms just like the kind you see on Edwardian chintzes.
The growth is moderate,and some pampering will be appreciated.
Foliage is light green and leathery.

Below this entry is a photo captioned 'Mrs Wakefield Christie Miller'
Colouring is correct but appears to have less petals than the rose shown as 'LMF'


One last entry for 'Lady Mary Fitzwilliam' from
THE COMPLETE BOOK OF ROSES by Gerd Krussman
Published by Timber Press in Oregon in 1981 after translation from the original German version published in 1974.
PAGE 361
After a diagram showing the pedigree of 'Lady Mary Fitzwilliam' the entry reads;
Bennett 1882
'Devoniensis'x'Victor Verdier'
Flesh pink,very large,globose,strong fragrance;foliage pale green.
One of the most important old rose varieties.WPR26.

All the descriptions of 'LMF' describe her as soft pink,pale pink or flesh pink.
On the other hand the descriptions of 'MWCM' invariably describe her as having soft pink upper petals and deeper pink reverses.
From the descriptions these two roses should not resemble each other at all- but all photos I have seen of 'LMF'have the colouring of 'MWCM'
I would dearly love to know where the real 'Lady Mary Fitzwilliam' is.