Complex sentence: William Rooney (29 September 1873-May 1901) was an Irish Nationalist, journalist, poet, a gaelic revivalist and member of the Gaelic League, 1889 he founded the Celtic Literary Society, along with Arthur Griffith and Denis Devereux.
Split into simpler sentences: William Rooney (29 September 1873-May 1901) was an Irish nationalist, journalist, poet, a Gaelic revivalist and member of the Gaelic League. He founded the Celtic Literary Society, along with Arthur Griffith and Denis Devereux.