Timothy Collins was a son of Michael Collins and Mary Hurley.
Kate Donovan was a daughter of Jeremiah Donovan and Joan Donovan.

Timothy Collins, a widower, of Derryclough and Kate Donovan, spinster, married on 25 February 1873 in the Catholic Parish of Drimoleague.  Marriage Witnesses were Patrick Moloney and Maurice John Spillane.

Children born in Derryclough on dates on Civil Birth Register:

Julia Collins, baptised 27 Dec 1873.  On Civil Birth Register her birth date is given as 20 Feb 1874  (see note below)

Timothy Collins, baptised 18 Apr 1879

Bridget Collins,

Ellen Collins,

John Collins, 12 May 1890

Jeremiah Collins, 1 July 1892

Margaret Collins, 1 July 1892

Census 1901:
http://www.census.nationalarchives.ie/pages/1901/Cork/Carrigbaun/Derryclogh_U_/1153695/

Death:
Timothy Collins died on 1 August 1910 at Derryclough.  From his death record he was married, aged 74 years, a farmer.  Present at his death and the Informant of it to the Civil Register was Kate Collins, his widow.
 

Census 1911:
http://www.census.nationalarchives.ie/pages/1911/Cork/Carrigbaun/Derryclogh_Upper/439901/

Note:

Civil Birth Register entry:
Julia's birth is registered in the Civil Birth Records.  It was registered on 30 March 1874  Here Ellen's date of birth is shown as 20 Feb 1874.  I have seen several examples of this where the State record has the birth a number of days, weeks and even months  after the baptism.  Also noting that the event was in each case registered some weeks after the birth date on the State register.  I believe that the baptism date is far more reliable as being very close to the birth date.
Under the Births and Deaths Registration Act, 1874 it was "the duty of the father and mother of the child, and in default of the father and mother, of the occupier of the house in which to his knowledge the child is born, and of each person present at the birth, and of the person having charge of the child, to give to the registrar, within forty-two days next after such birth, information of the particulars required to be registered concerning such birth, and in the presence of the registrar to sign the register". You were liable to be fined if a birth was registered late and so to avoid paying the fine it appears that some families gave a date of birth for the child later than the actual date and such can result in the baptism date predating the birth date in the records, and causing confusion for some researchers.