Thanks to all the above,
I obtained a cemetery map and location of my Gt Grandmothers grave back in 2004, and Magrat very kindly went along and photographed the headstone at her own expense (refusing all offers of recompense).
I eventually discovered that my Gt Grandmother died in Croydon where she was visiting her husbands sister, (who I had also lost after she disappeared from the Northeast). Croydon library very kindly looked in their records and confirmed that a Jane Davison died there in 1927 at the address my Grandfather moved to from Scotland in 1914. The death certificate confirmed that it was indeed my Gt Grandmother, and the reason for her visits to Croydon as her death was reported by her niece.
My father knew nothing of this, although he was 9 at the time.
Anyway, thanks all.
Bob
