Helen Edmundson 
The Clearing (NHB Modern Plays) [EPUB ebook] 

A powerful play about the effects of Oliver Cromwell's military campaign in Ireland — a ruthless conquest whose folk memories still sit uncomfortably in the Irish psyche.
Winner of the John Whiting Award for Drama
In the 17th century Cromwell moved English troops into a war-weary Ireland, forcing the local inhabitants onto barren land as the English gentry took over their homes. The cruelty of this racial persecution is brought into sharp focus through the tragic love of an Englishman for a local Irish woman.
'Does for 17th-century Anglo-Irish history what Arthur Miller did for 17th-century New England history' — Sunday Times
'A finely written play, full of sharp observation' — Independent on Sunday