Thankyou Kirk for this information, it seems to validate some of the content I have submitted.
What would be good is if it was confirmed Catherine Greville actually did become a Lady-in-Waiting or had another position to Queen Victoria, or was she known as a confidante and friend to QV. Is there any record she married or did she remain single until her death because this may have been the lady who did leave an important library to her relative upon her death.
Upon what scenario would Catherine have become a Great Aunt to Peter Charles Algernon Ascroft Fulke Greville (b1916, at Ankerwycke) the eldest son of Cecil Violet Enid Greville (b1896), youngest dau of Brooke Southwell Greville Kings Messenger.
In the 1920's the Greville family lived at 7 or 9 Beaufort Gardens, Knightsbridge and they had a residence 'Revells Hall' in Bengeo. Peter Greville also had an aunty Irene (older sister to Cecil Violet Greville) living in 10 Montpelier Mews, Knightsbridge and cousins at 16 Charles St.