He married Adine Berthe Maria Ruckert (born 29 July 1875, died 17 February 1947) on 2 July 1899 in Paris, France. Adine was a celebrated pianist and music teacher in her own right. O'Neill was associated with the Haymarket Theatre. His works include over fifty sets of incidental music for plays, including many by Shakespeare (Hamlet, King Lear, Julius Caesar, Macbeth, The Merchant of Venice, Henry V and Measure for Measure), J. M.
Barrie (A Kiss for Cinderella and Mary Rose), and Maurice Maeterlinck (The Blue Bird). In 1910, he became the first British composer to conduct his own orchestral music on record, directing the Columbia Graphophone Company's house ensemble, the "Court Symphony Orchestra", in a suite taken from his Blue Bird music on two double-sided gramophone discs. He received personal congratulations from Sir Edward Elgar on his music for the innovative central ballet sequence of the 1924 revue "The Punch Bowl", which ran for over a year with O'Neill's contribution being widely singled out for praise in press coverage. O'Neill's works also include a number of symphonic suites and chamber music. He was treasurer of the Royal Philharmonic Society from 1918 until his death, and taught harmony and composition at the Royal Academy of Music. When he died in 1934 he was cremated at Golders Green Crematorium, London, as was Adine on her death in 1947.
There is a plaque there in memory to both of them. Read more on Last.fm. User-contributed text is available under the Creative Commons By-SA License; additional terms may apply..