At this link http://churchrecords.irishgenealogy.ie/churchrecords/search
you will find the baptisms of 3 of the children of James Glavin & Mary Byrne, born in Dublin. It seems that the family returned to Dublin from Scotland.
On the 1901 census, there is a James (bootmaker, born England) & Mary Glavin + children James (might be the James born Dublin Feb 1880) + Christina aged 18.
No sign of James & Mary on the 1911 census, but James jnr. is there with his wife Elizabeth.