The 10th Battalion Royal Dublin fusiliers were training at the Royal barracks in Dublin when the Easter Rising broke on Monday 24 April. They were involved in relieving Dublin Castle, and later in helping clear various buildings including the Mendocity Institute
The 5th Battalion who were at the Curragh arrived in Dublin at 3.45 am on Tuesday morning, 25th April by train. 6, possibly 7, men of the 5th Battalion were killed over the next few days. They appear to have been involved with the storming of City Hall and the Daily Express offices. An action that has little written about it
The 4th Battalion Dublin Fusiliers were brought in from Templemore. 4th Dublins fought the rebels along the railway line from the Broadstone railway station (which the rebels had taken over) up to the Cabra Bridge. 2nd Lt George R Gray of 4th Battalion was killed on 28 April 1916 Age 21 Buried Grangegorman Military Cemetery. Son of the late Alexander and Helen Ross Gray, of Newcastle-on-Tyne. A Dental Student. Age 22. No other men from 4th battalion were killed
The actions of each of these battalions can be followed for 10th battalion, 5th battalion, 4th battalion.
The attitude of Dubliners to the rising is complex. See, for example, Jeffery, Ireland and the Great War, pp.44-47, and Ben Novick, Conceiving revolution: Irish nationalist propaganda during the First World War (Dublin: Four Courts, 2001) for a discussion of some of the perceptions.
Capt Henry De Courcey-Wheeler of the Dublins (Heroic Option by Bowen), an Irishman from Co Kildare, took the surrender of rebels in the Royal College of Surgeons where Countess Markievicz was second in command "So small was the Ascendency World that he was connected to Constace through marriage." I have not found his Battalion.
John Dillon, the Irish Party MP who was in Dublin during Easter week and witnessed events there, told the House of Commons:
I asked Sir John Maxwell himself, “Have you any cause of complaint of the Dublins [the Royal Dublin Fusiliers] who had to go down and fight their own people in the streets of Dublin? Did a single man turn back and betray the uniform he wears?” He told me, “Not a man.
CWGC details 2 officers and 10 Other Ranks killed, and contemporary reports give 6 officers and 28 ORs wounded. The full list
There were also a number of medals and awards