Poets who heard a whisper of war

I AM editing an anthology of Irish war poetry for publication by Blackstaff Press.

Earth Voices Whispering: Irish War Poetry 1914-1945 will bring together, for the first time, experiences of World War I and World War II, as well as conflict in Ireland — the Easter Rising, War of Independence, Civil War — and the Spanish Civil War, in addition to various contemporary reflections on these events.

If any of your readers could help with information on the following writers, it would be greatly appreciated: Eileen Shanahan (1901), Seán Jennett (1910), Patrick Maybin (1916), George Hetherington (1916), Bruce Williamson (1922), George Duggan (died Gallipoli, 1915 aged 29), G. Haslett Connor (born Warrenpoint, 1919), John Gallen (died 1947), Eileen Brennan, Terence Ward, Ruddock Millar, Liam MacGabhaun and George Brady.