I have recently found out my biological father was an Australian citizen. I was adopted at birth and he had no idea of my existence. He is now deceased. I have found my half brothers and have had a Dna which supports half sibling status. I have applied for my fathers birth certificate.
However his name is not on my birth certificate only the adoption paperwork and I have a different name. Are the authorities going to be difficult about this and do you think it wise to employ a migration agent or could I manage this myself?