John Regan was a son of Michael Regan and Julia Sullivan.
Johanna Connolly was a daughter of Patrick Connolly and Mary Hennessey.

The marriage of John and Johanna is not currently to hand.

Chuildren born at Garryglass on dates on Civil Birth Register:

Bridget Regan, 11 Feb 1884

Katherine Regan, 12 Feb 1886

Michael Regan, 9 Apr 1888

John Regan, 1 Oct 1890.  John married Mary O'Driscoll daughter of Timothy Driscoll and Bridget Brien.

Cornelius Regan, 24 July 1892

Denis Regan, 1 Aug 1895

Census 1901:
http://www.census.nationalarchives.ie/pages/1901/Cork/Drinagh/Garryglass/1153863/

Census 1911:
http://www.census.nationalarchives.ie/pages/1911/Cork/Drinagh/Garryglass/440064/

Deaths:
John Regan died on 5 May 1938 at Garrygleass.  From his death record he was a widower, aged 76 years, an old age pensioner.  Present at his death and the Informant of it to the Civil Registrar was his son John Regan of Toughbawn, Drinagh.
Hannah O'Regan died on 5 October 1935 at Garrygleass.  From her death record she was married, aged 76 years, a housekeeper.  Present at her death and the Informant of it to the Civil Registrar was her son John O'Regan of Moulagow, Drinagh.

From the Cork Examiner newspaper of 7 October 1935:
REGAN (Drinagh) - On October 5, 1935, at her residence, Garryglass, Drinagh, Hannah, beloved wife of John Regan. R.I.P.  Funeral on this day (Monday) from Sacred Heart Church, to Drinagh, at 1 p.m.
From the Cork Examiner newspaper of 6 May 1938:
REGAN (Drinagh) - On May 5, 1938, at his residence, Garryglass, Drinagh, John Regan, at an advanced age. R.I.P.  Funeral from Sacred Heart Church, Drinagh to Drinagh Cemetery, on to-morrow (Saturday) at 2 o'clock.