Denis Hayes was a son of Patrick Hayes and Mary Driscoll.
Hannah Fitzpatrick was a daughter of Cornelius Fitzpatrick and Johanna Mahony.

Denis Hayes, 25, a farmer of Clogheen, Clonakilty and Hannah Fitzpatrick, 23, of Derryduff, Rosscarbery married in Rosscarbery Church on 25 February 1868.  The marriage witnesses were James Fitzpatrick and Gerald Barry.

Children born at Clogheen Island, Clonakilty on dates on Civil Birth Register

Patrick Hayes, 5 Mar 1878

John Hayes, 4 Nov 1880

Timothy Hayes, 22 Aug 1884

Death:
Denis Hayes died suddenly on 27 November 1898 at Clogheen.  From his death record he was married, aged 56 years, a farmer.

Census 1901:
http://www.census.nationalarchives.ie/pages/1901/Cork/Clonakilty/Cloheen/1095585/

Census 1911:
http://www.census.nationalarchives.ie/pages/1911/Cork/Clonakilty/Cloheen/378845/

Death:
Hannah Hayes died on 5 July 1911 at Clogheen.  From her death record he was a widow, aged 65 years, widow od Denis Hayes a farmer.  Present at her death and the Informant of it to the Civil Registrar was Timothy Hayes her son of Clogheen.