social services
When someone is "not present," they were not there to witness the birth. It could also refer to a parent who was not legally involved in the birth (such as a father who did not acknowledge paternity).
Mimi Parent's birth name is Marie Parent.
Steve Parent's birth name is Steven Earl Parent.
Ask them, a parent, child or other relative.
The name of the parent at birth on the passport application is the parent's name as it was recorded at the time of the child's birth.
they could do a dna test and find out who is the parent
Your parents, not including your father, would be your mother. You might also include your grandparents in your immediate family. If you mean that you found out that the man who raised you is not your birth parent, that's a stressful thing to find out. However, someone who dedicated that much time and devotion to you can still be your father if you choose for him to be in your life.
by his nationality card
The last name at your parent's birth refers to the family name inherited from their parents.
A birth father is a genetic father of a child, as opposed to an adoptive father or stepfather.
It could be if they didn't have permission from the adoptive parent.
* Unfortunately, you did not give any reason as to why the birth parent is giving up their young child to a relative. If at all possible; even if it means government assistance the birth parent should try to keep their child. If it's absolutely impossible then all the birth parent can do is try to explain to the child the best they can, but it will never be enough and the child will feel unloved by the birth parent. Eventually the child will grow accustomed to being raised by a relative, but will eventually grow up and want to know why their birth parent did this. The least the birth parent can do is write a heart-felt letter explaining the circumstances as to why they had to give the child up and give the letter to the relative and when the child is old enough to understand and asks 'Why did my birth parent give me up' then they can read the letter. The birth parent should keep in touch with the relative to see how their child is and at some future date and providing the child wants too then the birth parent and child should meet when that child is no longer a minor.