Hi, Obtain the Genealogical Registration of Birth - from the Govt of
Alberta Vital Statistics Registry Offices.
This will have all of the information required at the time.
Including the names of the parents - and the childs name.
The Registration will cost in the $40 Cndn range
Not everyone uses the name that their parents chose for them,for whatever reason. Perhaps we dont like the chosen name - or don't feel connected to it. all legal. Some change their given names because they feel disconnected to family.so many reasons.
Note: Birth Certificate - is an extract of basic information taken from the Registration of Birth.
Depending on the requirements of the time - there will be more personal information about the birth mother,her marital status. other children born or stillborn -etc.
Cheers, Stella