Born in Cork, but working mostly in Dublin, he was imprisoned for his role in support of the 1916 Easter Rising.
O'Connor was born in Cork c. 1876,[1] later moving to Dublin where he operated a publishing business from Eccles Street.
[2] According to his military pension record, O'Connor was a member of the 1st Dublin Battalion of the Irish Volunteers,[3] and he is described in some sources as a "1916 veteran".
[2][4] He printed and published nationalist postcards and other materials,[5] a number of which were seized when O'Connor's premises were raided by the Dublin Castle authorities in the aftermath of the 1916 Rising.
[8] Following his release, O'Connor returned to publishing,[1] and he printed several early works of Seán O'Casey.