Michael Brien and Ellen Coakley married in Drimoleague Parish, Co. Cork on 3rd February 1863.  The Witnesses were Timothy Coakley and Cornelius Beamish.  We note from the marriage entry that Michael was one of the Brien clan with the branch name or agnomen Mangane.

Ellen was a daughter of James Coakley and Mary Connor
Michael was a son of John Mangane and Margaret Burke

We do see examples in families especially in the Drimoleague Catholic Parish where the surname used may be either Brien or Mangane and we have examples in families too where some children are baptised Mangane and others Brien.

Children born in Minanes and baptised in Drimoleague Catholic Parish on dates shown:

John Brien, 17 Feb 1866.  Sponsors: Timothy Coakley, Mary Coakley

Margaret (Peggy) Brien, 26 May 1868.  Sponsors: Timy Brien, Margaret Brien

Patrick Brien, 17 March 1870.  Sponsors: John Lynch, Margaret McCarthy

Mary Brien, 5 April 1872.  Sponsors: Peter Hays, Mary Brien

Denis Brien, April 1974.  Sponsors: Tim Twohig, Eliza Coakley

Ellen Brien, 7 June 1876.  Sponsors: Tim Coakley, Nelly Brien

Michael baptised Moynihane, 30 May 1878.  Sponsors: Thomas Moynihan, Mary Hourihane. Brien surname was used in State Birth Register

Census 1901:
http://www.census.nationalarchives.ie/pages/1901/Cork/Carrigbaun/Minames/1153739/

Census 1911:
http://www.census.nationalarchives.ie/pages/1911/Cork/Carrigbaun/Minanes/439951/

Deaths:
Ellen Brien died at Minanes, Drinagh, Co. Cork on 16 November 1906.  Her death record states she was 67 years, married, a farmer's wife.  Her daughter, Ellen Brien, Minanes was the Informant of the death on 3 Jan 1907

MIchael Brien died at MInanes on 30 November 1913.  His death record states he wasa widower, aged 77 years, a labourer.  His daughter, Ellen Connolly, Minanes, was the Informant of his death on 31 Dec 1913.