Take a Look at Blood On the Harp A good historical summary author: Turlough FaolainAlso: O'Sullivan, Songs of the Irish For the truly folk ones. The ones with an Irish Gaelic base.
T.C. Croker Popular Songs, Illustrative of the French Invasions of Ireland, London 1845-47
Galvin, P. Songs of Irish Rsistance, London 1953
Greaves, C.D. The Easter Rising in Song and Ballad, London 1980
R. Mason The Song Lore of Ireland, New York, 1911
J. McDonnell Songs of Struggle and Protest Dublin 1979
Nation The Writers of The Spirit of the Nation, Ballads and Songs, Dublin 1845,1882
O'Boyle The Irish Song Tradition Dublin 1976
H. H. Sparling ed. Irish Minstrely London 1887
G.D. Zimmerman Songs of Irish Rebellinon 1967
Now that should give you a start. I will not pick favorites but state that most are good for something. Most song books of Irish songs contain rebel songs.
Now that you have my list for rebel songs please take a moment to visit my collection of Ulster Protestant, Unionist, Loyalist songs and learn of the other side of the grand tradition of the isle of Ireland- a side which is just as good but is less known and less freely distributed due to black listing at Irish events activities and in music shops.
Conrad