Daniel Dempsey was a son of Timothy Dempsey and Catherine Scully of Brulea, Glandore
Julia Hayes was a daughter of Denis Hayes and Julia Collins of Maulmareen

Daniel Dempsey, a sailor, and Julia Hayes married in the Catholic Church in Kilmacabea on 12 February 1901.  The Witnesses were Patrick Dempsey and Annie Hayes.

Children born on dates on Civil Birth Register:

Timothy Denis Dempsey, 17 Jan 1902 @ 1 Roche's Row, Cobh

Daniel Patrick Dempsey, 22 Mar 1905 @ Maulmareen

Kathleen Dempsey, aged 2 in 1911 Census - born in England

Julia Marie Dempsey, 27 Sep 1912 @ 1 Roche's Row

Census 1911:
http://www.census.nationalarchives.ie/pages/1911/Cork/Queenstown_No__2_Urban/Roches_Row/406376/
 

Deaths:
Julia Dempsey died on 28 May 1949 at 9 Roche's Row, Cobh.  From her death record she was married, aged 63 years, wife of Daniel Dempsey a nanal officer.  Present at her death and the Informant of it to the Civil Registrar was Sheila Dempsey, daughter of 9 Roche's Row.
Daniel Dempsey died on 13 June 1958 at 9 Roche's Row, Cobh.  From his death record he was a widower, aged 83 years, nanal pensioner.  Present at death and the Informant to the Civil Registrar was Denis Moynihan of 9 Roche's Row.