The grandfather was Michael Creagh (1896) son of Richard Creagh GGrandad(5/5/1867)
who was born in Doneraile.
I have the marriage certificate for Richard Creagh and Lucy Higgins from the GRO
It appears Richard left Doneraile Cork and moved to Dublin sometime before 1895 where he met Lucy.
Richard Creagh, married Louisa (Lucy) Higgins (DOB 1874 approx), married 8th January1895.They lived at 22 Sackville Avenue(Summerhill) Dublin before moving to Pitt Street by the 1911 census.
As discussed they had 5 children one of whom died young, the surviving children were:
Dick (Richard) 1902
Ellen Callaghan born 1836 approx and her husband Michael Creagh GGranddad (Doneraile) married 1856 approx.
They resided at7 Buttevant Lane in Doneraile (now known as Convent road) under the landlord Lord Castletown (St Leger Family)in 1911
They had 8 children 7 of whom were alive in 1911 census Michael had since died
I have identified six
Michael Joseph Creagh 7th June1857son of Michael Creagh and Ellen Callaghan
Mary Elizabeth Creagh born 16 Oct 1864 daughter of Michael Creagh and Ellen Callaghan
Richard Joseph Creagh born 5th May 1867 son of Michael Creagh and Ellen Callaghan(Great Grandad)
John (1870) son of Michael Creagh and Ellen Callaghan
William (Joseph) Creagh born 27 Apr 1873 son of Michael Creagh and Ellen Callaghan
Ellen Creagh born 23 Feb 1876 daughter of Michael Creagh and Ellen Callaghan
William (Joseph) (1872) possible???