1911-1979 1917-1977 1939-2013 20thcentury americanpoetry criticism criticismandinterpretationbishop criticismandinterpretationbrown criticismandinterpretationhill criticismandinterpretationlowell criticismandinterpretationmerrill criticismandinterpretationwalcott derek elizabeth english english-speakingcountries englishpoetry etc geoffrey georgemackay history historyandcriticism historyinliterature inliterature ireland irish jamesingram literatureandhistory memorialsinliterature memoryinliterature monumentsinliterature mythinliterature northernireland poetry robert scottish seamus theory welsh