Padraic Colum he became involved with the National Theatre Society and became involved in the founding of the Abbey Theatre, writing several of its early productions. His first play, "Broken Soil" (revised as The Fiddler's House) (1903) was performed by W. G. Fay's Irish National Dramatic Company. "The Land" (1905), was one of that theatre's first great public successes. He wrote another important play for the Abbey named "Thomas Muskerry" (1910). His earliest published poems appeared in "The United Irishman", a paper edited by Arthur Griffith. His first book, "Wild Earth" (1907) collected many of these poems and was dedicated to Æ.
Mary Devenport O'Neill Colum, W. B. Yeats, Richard Irvine Best, Frank O'Connor, Francis Stuart and Iseult Gonne. She became particularly close to Yeats, who she confided in. Yeats' recorded their weekly consultations in his diary while O'Neill was writing "A vision" (1925). In his "Oxford anthology of English verse" from 1936, he included one of O'Neill's poems. In 1917, she contributed lyrics to her husband's play "The kingdom maker". She published her only book in 1929, "Prometheus and other poems". After this she occasionally contributed primarily modernist plays and poetry to "The Dublin Magazine", "The Irish Times" and "The Bell". O'Neill collaborated with