William Duggan was a son of William Duggan and Catherine Mahony
Ellen Mahony was a daughter of Timothy Mahony and Ellen Connor.

William Duggan of Rathfillane and Ellen Mahony of Old Park married in Newcestown RC Parish on 18 July 1903.  The Witnesses were Dan Murphy and Ellie Hayes.

Children born in Rathfelane:

William Duggan, 30 September 1907.  William, aged 24 years, died of TB at Rathfellne on 29 November 1931.

Catherine Duggan, 28 March 1910.  Kitty Duggan of Rathfilane died in hospital in Cork on 27 Dec 1931

Margaret Duggan, 17 June 1918.  Margaret died at Rathfelane on 13 Feb 1932. Her mother was the Informant of the death to the Registrar
 

Census 1911:
http://www.census.nationalarchives.ie/pages/1911/Cork/Moviddy/Rathfelane/374217/

Deaths:
Ellen Duggan on 4 February 1934 in hospital in Cork.  From her death record she was married, aged 55 years, a housekeeper.
William Duggan died in hospital in Cork on 26 February 1951.  From his death record he was a widower, aged 78 years, a small farmer.