Timothy Brien was a son of Michael Brien and Margaret Donovan
Kate Daly was a daughter of John Daly and Johanna Mahony

Kate Daly is listed here on the Daly Garranes Nth, Castledonovan page

Timothy Brien (32) and Kate Daly (19), both from Castledonovan, married on 29 April 1900 in the Catholic Church in Drimoleague.  The Marriage Witnesses were John O'Mahony and Kate O'Mahony.

Children born in Castledonovan on dates shown (from State Birth Register)

Michael John O' Brien, 3 Sep 1901

Margaret (Maggie) O'Brien, 4 Nov 1902

John Brien, 23 Sep 1904

Mary Brien, 1 Sep 1906

Hannah Brien, 4 May 1908

Kate Brien, 22 Nov 1910

Patrick Brien, 5 Mar 1913

Census 1901:
http://www.census.nationalarchives.ie/pages/1901/Cork/Dromdaleague_North/Garranes_North/1153943/

Census 1911:
http://www.census.nationalarchives.ie/pages/1911/Cork/Dromdaleague_North/Garranes_North/440144/

Deaths:
Timothy Brien died at Castledonovan on 21 March 1913.  From his death record he was married, aged 44 years, a farmer.  Present at his death and the Informant of it to the Civil Rehgistrar was Johanna Daly of Castledonovan.
Kate O'Brien died at Castledonovan on 1 April 1927.  From her death record she was a widow, aged 43 years, a farmer's widow.  Present at her death and the Informant to the Civil Rehgistrar was Margaret O'Brien, daughter, of Bandon.