Revised birth details

[amilne109]

Hoping someone can point me in the right direction. Following the death of my Great Grandfather his widow had a relationship (but did not marry) which resulted in the birth of a son. His birth was registered under the fathers name with the child also having the fathers surname.
In 1926 the child emigrated to Australia using a birth certificate his mother had purchased with the surname of both father and son being changed.
Where should I be looking to find the amended certificate

[Albufera32]

A birth certificate (amended or otherwise) is simply an extracted copy of the original birth register.

For a purchased certificate to be amended, the original register would also have to have been amended - and the record of that change or "correction" would be held alongside the original register, in the GRO or GROS as appropriate.

[CaroleW]

Which country was he born in - you have posted on the Common Room board so no clues there 😁

What year was the birth registered?

On the child's birth cert - how is your gt grandmother name shown (ie) is she shown as the same surname as the father or shown under her previous married name?

[amilne109]

Hi Carol, the birth was registered in England in April 1905. His mother used the fathers surname although they never married. I assume it was to give the child some legitimacy,
The revised certificate changed the father and child's surname to that of her married name IE my great grandfather, first names were unchanged.

[AntonyMMM]

In E/W there is no surname shown for the child on a birth entry until 1969, so what you are seeing in the index is the surname of the father, or mother, or sometimes both, depending on their marital status.

It sounds like the entry was subject to a correction, in which case there would be no other entry to get, just the single entry showing the changes.

If there was a re-registration, then there would be a separate entry to look at.

Without seeing details of the names etc it is impossible to say for certain which it was.

[Dundee]

In 1926 the child emigrated to Australia using a birth certificate his mother had purchased with the surname of both father and son being changed.
Where should I be looking to find the amended certificate

If you don't have a copy of this certificate, how do you know it existed?

Debra 

[amilne109]

His grandson says he has the document but will not share for privacy reasons.
not that it is any of your business but I asked a question about finding possible sources to obtain a copy,not to have the validity of my question challenged

[rosie99]

I don't believe that the validity of your question was being challenged, sometimes we need additional information to try and help with queries.    Have you purchased the 1905 original certificate from the GRO to see if there is any mention of a later amendment on that. 

As AntonyMMM mentions a birth certificate for the early 1900's does not note a surname for the child.