Do you know who her parents were?
Guessing this could be her birth registration
Mar 1878 Cardiff
Sparkes Mary Ann
ancestry links to an Annie Sparkes 23 servant in Surrey for 1901 but there is another Annie about so not sure if she is your Mary Ann
Yes, I think that is her. I am in the process of sending off for her birth cert (one aborted attempt down!).
There are a couple of Ann or Annie Sparkes as well on Ancestry that seem to be other people....one is the daughter of a farmer in South Wales. However both the 1881 and 1891 Surveys which show her living with elderly relatives have Mary Ann Sparkes born in Cardiff and the ages line up with the info in the 1911 Census which we know is her.
I still cannot find her in the 1901 survey so if anyone can I would be very grateful!