Looking for the Family of Amelia Wells

Amelia(as she called herself) was to my knowledge born in Tasmania,Australia, circa 1879,she had 6 children (all father unknown) her 3rd born was my paternal grandfather Claude Nathaniel Wells, I am trying to find who she belongs too, keep hitting brick walls when researching her, I've been told her real name could have been Julia Malvina Wells & her parents could be from New Zealand, but have been unable to contact the person who told me this again. Would really appreciate any information or help anyone can give me.