Seumas or Seamus O'Sullivan (born James Sullivan Starkey; 17 July 1879 – 24 March 1958) was an Irish poet and editor of The Dublin Magazine.
In 1936 a version of a play by Irish playwright Teresa Deevy called The King of Spain's Daughter[2] was included in The Dublin Magazine which was edited by O'Sullivan.
Brimmer Company were accredited within the 'Acknowledgments' of People and Music by Thomasine C. McGehee – published by Allyn and Bacon in the Junior High School Series, edited by James M. Glass, 1929 and 1931 respectively – for both (the frontispiece) In Mercer Street and the excerpt from Ballad of a Fiddler (page 93).
He was inclined to be quarrelsome, due to his heavy drinking: on one occasion he insulted James Stephens publicly at a literary dinner.
With its straightforward language and direct imagery, his poetry was attractive to composers, particularly his most popular poem 'The Piper' ('A piper in the streets today') which was set by Peter Crossley-Holland, Michael Head, Ivor Gurney, Norman Peterkin and Vaughan Williams.