Hi Janan
Please forgive me, my head is bursting. I also have found the same reference details you listed, but I can't remember how I got there.
On the 1881 census Mary is listed as having only the 1 christian name, so I assumed that not having got her birth certificate, then the census would be correct, maybe I've it all wrong. I never realized how complicated and time consuming searching is, but I am truly enjoying it. I will keep your info to hand.
Many thanks
Maureen