Dorgan ancestors

Looking for information on the Dorgan family; father  Laurence (b abt 1800), mother  Ellen Healy Dorgan (b abt 1800), children  Jeremiah 29 Dec 1820, Catherine 9 Feb 1828, Patrick 11 Apr 1830, Michael 28 May 1835, Ellen Jan 1835 ?, Margaret 15 Aug 1841, and Carmen birth unknown .  I have a record of a Laurence Dorgan marriage to Ellen Healy 15 Feb 1820 in the Roman catholic parish Donoughmore.  birth/baptism Roman catholic records for Michael Dorgan 28 May 1835 - Blarney, Jeremiah Dorgan 29 Dec 1820 - Blarney, Catherine Dorgan 9 Feb 1828 - Blarney, Patrick Dorgan 11 Apr 1830 - Blarney, All these children relocated to the USA.  Would like any information on the parents and daughters if available.  They emmigrated at different times about 1848 and after.  

Had the date wrong for Jeremiah b 29 Dec 1820 Blarney.  Do you have records for this date? Found marriage for Laurence and Ellen, Births of Catherine, Patrick, Michael, Margaret.  one other page wasn't sure of childs name and date.  Hard to read.  Would this parrish have cemetery records? I think the parents died in Ireland.