May I presume that the person you are helping was born in Australia.
If born in Victoria, or New South Wales, or Queensland or Western Australia, then their own birth certificate should give quality information about their parents.
I was born in NSW, and my birth cert includes the following about my parents:
when and where married (date and place)
their full names (including all their middle names, and mum's maiden name)
their ages (when I was born)
their occupations (when I was born, including the full name of Dad's employer, not just his professional occupation)
their home address (when I was born)
where I was born (hospital), the doctor's name, and the names of two midwifes.
plus the names and ages of my older siblings....
I understand that Victoria's bdm birth certs have far more depth of detail than NSW, and that Qld and WA have about the same as NSW. ALL have restricted access for members of the general public, but living people who can provide proof of identity IF NAMED on the document can generally purchase the certificate.
So if the person you are helping has good contact with their youngest sibling, then have you asked them to check their own birth certificate to compare ....
JM
