In the 1881 census 18 Newcastle Street, St. Mary le Strand, London. Head William O’Neill, age 48, tailor, born Berkshire. Wife Martha O’Neill, age 49, born Reigate, Surrey. Daughter Mary Ann O’Neill, unmarried, age 27, dressmaker, born Westminster, Middlesex. Son John J. O’Neill, unmarried, age 23, clerk, born, Westminster. Daughter Amelia C. O’Neill, unmarried, age 21, gold embroideress, born Westminster. Son William P.? O’Neill, unmarried, age 20, artist, born Westminster. Daughter Ellen M. O’Neill, age 16, Teacher (sch), born Westminster. Daughter Emily A. O’Neill, age 14, apprentice, born Westminster. Daughter Alice M. O’Neill, age 13, scholar, born Westminster. Daughter Rose M. O’Neill, age 10, scholar, born Westminster. Son Hugh E. O’Neill, age 8, scholar, born Westminster.

In the 1891 census 18 Newcastle Street, St. Mary Le strand, St. Clement Danes, London. Head William O’Neill, age 57, tailor, employer, born Maidenhead Berkshire. Wife Martha O’Neill, age 59, born Reigate, Surrey. Daughter Marian O’Neill, single, age 34, dress fitter, employed, born St. Clement Danes, Middlesex. Daughter Alice O’Neill, single, age 23, governess, employed, born St. Clement Danes. Daughter Rose O’Neill, single, age 20, dressmaker, employed, St. Clement Danes. Son Hugh O’Neill, single, age 20, tailor’s apprentice, employed, born St. Clement Danes.

In the 1901 census 18 Newcastle Street, St. Clement Danes, London. Head Martha O’Neill, widow, age 71, born Reigate, Surrey. Daughter Rose O’Neill, single, age 30, dressmaker, worker, born Strand, London. Son Hugh O’Neill, widower, age 28, master tailor, employer, at home, born Strand. Grandson Hugh P. W. O’Neill, age 4, born St. Giles, London.