Yes, I will do some research in Australia. I'm unsure whether the family lived in Australia or not, as Eileen lived in NZ, her husband was born in NZ too. They might have just been married in NSW (it's happened a few times in my family, marriage in Australia, living in NZ).
Since the father's occupation is a squatter, I suppose we can assume at this point the family was living in Australia. We'll see.
I agree.... but is it a Middle Name or Surname?
As in St Aubyn-Burke ?? Just a thought
My cousins the St Aubyn Murray family believe it's a surname and they have been treating it as such.
One family line is John St Aubyn Burke -> Eileen St Aubyn Burke -> Henry St Aubyn Murray -> Anthony St Aubyn Murray.
Henry St Aubyn Murray was Eileen and Henry Murray's first child, his descendants have continued to be named St Aubyn Murray.
Whether it really is a surname or not, I'm unsure.