Hello Dave,
Many thanks for the Benson information. I know very little about this part of the family, but I should say I have since learned that her name was actually Amelia Anne Catherine Benson, born in 1857, with a brother Walter John born 1860 and a sister Rosina Selina born 1864. All three were baptised in Aliwal North in 1873, Amelia being noted illiegitimate, no father's name being given for any of them, and the mother Amelia Ann described in Trade/Profession as a Purveyor. The sponsor was Sarah Maria Nolan, who, when she married in Aliwal North in 1877 was 28, a widow, and when Rosa Selina married in 1881 one of the witnesses was Henrietta Nolan, so I wonder if there is some kind of relation there between Nolan and Benson.
Thanks again,
JOhn