September 26, 1289All Men of Good Will to the King, Both Irish and English, in Munster and Leinster Are Summoned to Buttevant in Leix
September 26, 1290Queen Margaret, Maid of Norway (Eiriksdotter) Died, en Route From Norway to Scotland.
September 26, 1713Charles Lucas, Physician, MP and Political Radical, Is Born in Ballingaddy, Ennis, Co. Clare
September 26, 1930Saor Éire, a Republican-Socialist Party, Is Founded by Peadar ODonnell, Seán MacBride and Other IRA Members