Hackett Fitzgerald

My grandparents Mary Ann Hackett and Michael Fitzgerald were from Galway.  They separately went to Boston, MA and married there.  They were born around 1865 and were in Boston married having their first child Thomas Joseph in 1890 (he died in WWI as an Irish Soldier in 1917.   I am seeking information about their families in Galway and burial of Thomas Joseph.  

Thank you.