Good Evening All
Update
1911 Census - Nancy Sloss aged 7 adopted daughter of Andrew and Margaret Sloss living at Campsie
1921 Census - name change Agnes Sloss daughter aged 17 of Andrew and Margaret Sloss living at Campsie
Agnes Sloss was the name of my aunt's mother on her birth certificate and my aunt was born at the address of Andrew and Margaret Sloss. Quick check of valuation rolls and Margaret Sloss was living at the address at the time of my aunt's birth in Campsie having been widowed.
Margaret Sloss's maiden name was McMillan and on my grandmothers marriage certificate she has her mother's maiden name as Margaret McMillan.
It does look like Nancy Sloss, becomes Agnes Sloss becomes Ann Morrison my grandmother. Nancy Sloss disappears after the census in 1911 and Agnes Sloss records dont tie in with my grandmothers details.
I dont know where the Morrison name comes from. If it was a made up name, or perhaps Andrew Morrison was her real father. Still havent managed to find a birth certificate.
There are three Andrew Morrison soldiers wills that I am looking into to see if there is any connection, she was always told that her father died in the war.
I would just like to say big thank you to everyone who helped me previously. It would seem that the mystery of Nancy Sloss has been solved.