Hi all! :)
I have dual citizenship (mother is Japanese, father is British). I was born in UK therefore my birth certificate is British and states my full name: Alayna Saori CARTZ.
However, when I came to Australia 3.5 years ago on a student visa (current), I came on my Japanese citizenship...
My wife is currently on the subclass 820 partner visa.
She has legally changed her name to mine shortly after receiving this.
Waiting for the PR in 2 yrs time.
This new last name change has been added to her passport as an amendment on another page by her country's consulate.