I soon found the difficulties you are encountering
1910 could Hulbert have been the son or relative of Adam, Andrew, joiner, 281 Connsbrook Avenue near Ferndale st intersection
who lived there briefly in1910 see 
http://www.lennonwylie.co.uk/ccomplete1910_b.htm not there in 1908
1911 Irish census  18 in Beechwood Street (Pottinger (part of), Down) see 
http://www.census.nationalarchives.ieCaswell   James   25   Male   Head of Family   Presbyterian   Co Armagh   Shop Assistant   Read and write yes both   -   Single   -   -   -   -
Adam   Andrew   48   Male   Brother in Law   Congregationalist   Scotland, Fifeshire   Joiner Shipyard   Read and write yes both   -   Married   -   8   2   1
Adam   Sarah   35   Female   Sister    [ie nee Caswell] nee Congregationalist   Co Armagh   -   Read and write yes both   -   Married   -   8   2   1
Adam   Agnes   5   Female   Niece[ ie Andrew’s daughter]   Congregationalist   Belfast   -   Cannot read   -   Single   -   -   -   -
did they have more children
then I tried
1911 census again
no wrong one at 1 in Ervey (Grogey, Fermanagh)
ancestryireland a credits purchase charity
HUBERT   ADAMS   1901   father ROBERT   Antrim looks good
then census 1911 again
 6 in Henry Street (Dock Ward (Belfast Clifton), Antrim) a large boarding house for males
Adam   Robert   56   Male   Lodger   Presbyterian   Belfast City   Hackler   Read and write   -
oversea
a Robert Adam b1873 glasgow was a shipyard joiner in 1901 census son of Marjury Adam b 1842 Aberdeen, living in Old Kilpatrick Dunbartonshire
then I tried burials and finally came across 
https://ssl.belfastcity.gov.uk/burialsearch/Name of deceased   John Bell Adam
Last place of residence   281 Connsbrook Ave 
Age   2 Years
Sex    
Date of death   21 October 1910
Date of burial   23 October 1910
Cemetery   Dundonald Cemetery
Grave section and number   C2 334
Burial Type   Earth Burial
Occupants of grave C2 334, Dundonald Cemetery
Forename   Surname   Age   Date of death   Date of burial   Cemetery   
Sarah   Adam   79 Years   1 December 1954   3 December 1954   Dundonald Cemetery   
Andrew Bell   Adam   67 Years   12 June 1936   15 June 1936   Dundonald Cemetery
John Bell   Adam   2 Years   21 October 1910   23 October 1910   Dundonald Cemetery   
have run out of time can you stitch some of the above together further, but the father sname of Robert could be a stumbling block
Good luck