Cornelius Downey and Catherine (Kate) Mahony married in the Roman Catholic Parish of Schull West (nowadays called Goleen Parish), Co. Cork on 26 Feb 1859.  The Witnesses were Mark Downney and Mary Leary.

Children baptised on dates shown in Schull West Parish:

William Downey, 16 June 1860; Sponsors: Patrick Mahony, Margaret Downey

Dan Downey, 25 May 1862; Sponsors: Denis Reily, Johana Cullinane

Cornelius Downey, 17 March 1864; Sponsors: Pat Daly, Kate MccArthy

Cornelius Downey, 13 Feb 1866; Sponsors: John Mahoney, Elizabeth Burns

Mary Downey, 22 Feb 1868; Sponsors: James Mahoney, Jane Mahoney

Hanora Downey, 21 Feb 1870; Sponsors: Con Sullivan, Kate Jones

Denis Downey, 8 Oct 1871; Sponsors: Florence Driscoll, Margaret Glavin

Patrick Downey, 16 April 1873; Sponsors: Rick Carthy, Mary Downey

James Downey, 18 Dec 1876; Sponsors: Denis Driscoll, John Mahony

Jane Downey, born 29 Dec 1879 from Civil Birth Register

Ellen Downey, c. 1883

John Downey, born 29 May 1885 from Civil Birth Register
 

Census 1901:
http://www.census.nationalarchives.ie/pages/1901/Cork/Crookhaven/Kileane/1157974/

Census 1911:
http://www.census.nationalarchives.ie/pages/1911/Cork/Crookhaven/Killeane/443973/