John Duggan was a son of John Duggan and Elizabeth Galvan (Gallivan).
Catherine Coughlan was a daughter of Daniel Coughlan and Margaret Donovan.

John Duggan of Bandon and Catherine Coughlan of Bandon married on 26 November 1912 in St Patrick's Church in Bandon.  The witnesses were John Duggan and Kate McCarthy.

Hereunder we show a copy of the Baptismal Register for Kilmurry, Moviddy, Kilbonane and Cannovee Parish for 1870.  The bottom entry is the baptism of John Duggan child of John Duggan and Bessy Gillivan on 3 April 1870.  Written above it is "married in Bandon 26 Nov 1912 to Catherine Coughlan (sps not given)".  On occasions we do see such additions on Baptismal records which is indeed very useful for verification purposes.

Extract from Civil Marriage register

Children born at New Road, Bandon on dates on Civil Birth Register:

John Duggan, 25 Aug 1913.  John Duggan died in England on 6 Aug 1969

Elizabeth Duggan, 31 Mar 1919

Deaths:
John Duggan died on 16 February 1931 at New Road, Bandon.  From his death record he was married, aged 60 years.  Present at his death and the Informant of it to the Civil Registrar was Catherine Duggan, widow of deceased, New Road
Katherine Duggan died on 4 March 1956 at New Road, Bandon.  From her death record she was a widow, aged 70 years.  Present at her death and the Informant of it to the Civil Registrar was Elizabeth McSweeney, daughter of deceased, New Road

Death announcement on Cork Examiner newspaper of Monday, 5 March 1956:
DUGGAN (Bandon) - On March 4, 1956, at her daughter's residence, The Music Studio, New Road, Catherine Duggan (nee Coughlan).  Deeply and deservedly regretted by her sorrowing family, brother, sister, son-in-law and grandchildren.  R.I.P.  Remains will be removed this (Monday) evening at 6.30 to St. Patrick's Church.  Funeral on tomorrow (Tuesday) to adjoining cemetery.  - (English and American papers please copy).