Seán mac Cuinn Ó Néill
See also references for related subjects.
Hogan, James, “Shane O’Neill comes to the court of Elizabeth”, in: Pender, Séamus [ed.], Féilscríbhinn Torna: essays and studies presented to professor Tadhg Ua Donnchadha (Torna) on the occasion of his seventieth birthday, September 4th, 1944, Cork: Cork University Press, 1947. 154–172.  
Discusses the visit of Shane O'Neill, lord of Tir Eoghain, to the court of Elizabeth I.