The Bird Cage - O'Duffy, Eimar : H.C. Kinsey New York, 1933, first edition, 282 pages. Eimar Ultan O'Duffy (29 September 1893 – 21 March 1935) was born in Dublin and educated at Stonyhurst College in Lancashire and at University College Dublin. He was an influential person in the 1916 Easter Rising when he prevented Bulmer Hobson from stopping the Rising from happening by incarcerating him. Aside from his duties during the Rising, O'Duffy has been a prolific writer. A later work that touches occasionally on the Money Question.