Reigh, J. D. (1890). The Battle of Credran, Co. Sligo, A.D. 1257: Single Combat between the Irish Chief, Geoffrey O' Donnell, and the English Lord Justice, Maurice Fitzgerald. " And now, fierce O'Donnell, thy battle-axe wield - The broad sword is shiver'd, and cloven the shield, The keen steel sweeps through proud crest and crown - Clar-Fodhla hath triumphed - the Saxon is down!" - Edward Walsh. W.P. Swan, Lith.

Reigh, John D. The Battle of Credran, Co. Sligo, A.D. 1257: Single Combat Between the Irish Chief, Geoffrey O' Donnell, and the English Lord Justice, Maurice Fitzgerald. " And Now, Fierce O'Donnell, Thy Battle-axe Wield - The Broad Sword Is Shiver'd, and Cloven the Shield, The Keen Steel Sweeps Through Proud Crest and Crown - Clar-Fodhla Hath Triumphed - the Saxon Is Down!" - Edward Walsh. W.P. Swan, Lith, 1890.