 Sean O'Casey, the next major dramatist to write for the Abbey, knew Synge's work well and attempted to do for the Dublin working classes what Synge had done for the rural poor.Brendan Behan, Brinsley MacNamara, and Lennox Robinson were all indebted to Synge.Critic Vivian Mercier was among the first to recognise Samuel Beckett's debt to Synge.