This has been bugging me for years!

[Feichin]

I'm not aware of a Hemish Road in Dublin so I think that Thomas Curtin's address was Slemish Road in Cabra.

[tmp48]

So in effect you are just looking to locate FOC born 1937

Were the family back in the UK by 1939? did you locate them on the 1939 register?
This could be a good starting point

Also if you know where they were c1943 to 1951 (FOC aged 6 to 14) you may be able to find a school record especially if you can locate family members that you are sure lived past infancy.
There may also be church records for events in his lifetime.

That is assuming he lived past infancy

It's belived that Thomas & Christina aka Dinah Curtin lived in Tyrone Ireland at some point

Earliest London Electoral Register:
1957 • Paddington North, England 83 Marylands Road. Christina & Dolores Curtin..no Thomas though.

My aunty Dinah lived in Hammersmith London with her second husband Charles Van Dieman until her death. Her Daughter Dolores had married and American and Emigrated to the USA where she died.

[myluck!]

If their son born in 1937 moved to Tyrone with them and either lived on there or died there this may be the answer to a lack of information

Northern Ireland Records are not freely available on-line LINK to info

[tmp48]

If their son born in 1937 moved to Tyrone with them and either lived on there or died there this may be the answer to a lack of information

Northern Ireland Records are not freely available on-line LINK to info

I'm convinced that the son born 1937 died in infancy, probably in Dublin where he was born.  I have found several Baptisms and Birth certificates for loads of my other family relatives born in Dublin, yet not all deaths were found or recorded.