O'Neill's of Down

Have some info about my family from County Down. My grandfather: Walter O'Neill (1902-1980) in Millisle. Lived at 5 William Street, Donaghadee in 1922 (with mother Martha and step-father John Kimm).  Arrived in New York 9 Dec 1920.  Later moved to Toronto, Canada.  Married Jemima Rankin McEwan (1903-1980). My great-grandmother: Martha O'Neill (1884-somtime in the late 1960's).  Never married my grandfather's father, she married John Kimm in 1908) .Her father was James O'Neill (1841-1910), and her mother was Margaret (Maggie) McCollum (1843-unknown).  She had siblings named: Elizabeth (1860), Isabella (1863), Robert (1864-1934), James (1867-1910), Margaret (1868), Patrick (1870), John (1872-1939). William (1874), Rebecca (1876-1910), David 1st (1877), Ellen (Nellie) (1860), David 2nd (1882), Samuel (1882).