O’Sullivan spends his adult life in the Dublin suburb of Rathgar. In 1926 he marries the artist Estella Solomons, sister of Bethel Solomons. Her parents are opposed to the marriage as Seumas is not Jewish.
O’Sullivan’s books include Twilight People (1905), Verses Sacred and Profane (1908), The Earth Lover (1909), Selected Lyrics (1910), Collected Poems (1912), Requiem (1917), Common Adventures (1926), The Lamplighter (1929), Personal Talk (1936), Poems (1938), Collected Poems (1940), and Dublin Poems (1946). Terence de Vere White praises him as “a true poet,” and is critical of William Butler Yeats for leaving him out of his anthology of Irish poets, which he thinks a particularly strange decision since Yeats and O’Sullivan are friends, although they quarrel from time to time. In 1936 a version of a play by Irish playwright Teresa Deevy called The King of Spain’s Daughter is included in The Dublin Magazine which is edited by Seumas O’Sullivan.
O’Sullivan and B.J. Brimmer Company are accredited within the ‘Acknowledgments’ of People and Music by Thomasine C. McGehee, published via Allyn & Bacon within the Junior High School Series and edited by James M. Glass, 1929 and 1931 respectively, for both the frontispiece In Mercer Street and the excerpt from Ballad of a Fiddler on page 93.
O’Sullivan has a great admiration for Patrick Kavanagh, and in the 1940s he is one of the very few Irish editors who is prepared to publish his poetry.
O’Sullivan is a friend of most of the leading literary figures in Dublin, including William Butler Yeats, James Stephens and George William Russell. His “at homes” on Sunday afternoons are a leading feature of Dublin literary life, as are Russell’s Sunday evenings and Yeats’s Monday evenings. He is inclined to be quarrelsome due to his heavy drinking and on one occasion he insults James Stephens publicly at a literary dinner. Even the kind-hearted Russell admits that “Seumas drinks too much.” Yeats’ verdict is that “the trouble with Seumas is that when he’s not drunk, he’s sober.”
Seumas O’Sullivan dies on March 24, 1958.
(Pictured: Portrait of Seumas O’Sullivan by Estella Frances Solomons)