Thomas Byrne married Mary Agnes Hoey 1921 in the Pro-Cathedral in Dublin. Katie Byrne and Michael Joseph Magee present at marriage.This could be the family in the 1911 census 5 Osbery Cottages Rathmines and Rathgar West.
Head Thomas 38y, Elizabeth wife 36y, Katie 13y, Thomas 10, Michael 8y, James 3y,
Hoping somebody else is researching this family and can help me out.