Searching for missing records of Fitzgibbon/Gibbons/Ryan family in Murroe

Hello Ireland XO Murroe Volunteers!

I hope you can assist me in locating some missing records for a few people listed below. 

It appears that my gggrandparents Michael Fitzgibbon (or Gibbons) and Cath (Kitty) Ryan and their family lived in Ballyvoreen, Murroe until their deaths. Michael died in 1882 and Catherine died in 1873.

Per the RC parish registers, I believe they may have had the following children:

1. Bgt  born 1833
2. Patrick born 1835
3. Mgt born 1839
4. William born 1839
5. David  born 1842
6. Cath  born 1844
7. Ellen born 1846
8. David born1838- father surname Gibbons
9. Mgt born 1849- father surname Gibbons
10. Hanora  born 1849- father surname Gibbons

I've come across 2 other possible relatives (see below), but can't seem to locate birth records online for either Mary Gibbons or Martin Fitzgibbon. 

Mary Gibbons was born about 1842, per her civil death record in 1919 in Murroe, Limerick. Mary married John Keane in 1865. Her father was listed as Michael Gibbons of Ballyvoreen on her civil marriage record.

Martin Fitzgibbon was born about 1845, per his civil death record in 1917 in Murroe, Limerick. Martin married Mary Cormack (or McCormack) in 1866. His father was listed as Michael Fitzgibbon of Ballyvoreen on his civil marriage record. Martin Fitzgibbon and many of his family are also buried in Ballinure cemetary (Mongfune). 

Is it possible that Mary could be the Margaret born in either 1839 (or in 1849) and Martin the David born in 1842 (or in 1838)? I mention this possibility because at least one of the other siblings went by a different given name. Hanora married Timothy Simmons in 1878 and went by the name of Anne or Annie on some of her later records. 

Any help you can provide in locating either Mary or Martin's birth or baptismal records would be appreciated? 

Kind Regards- S Gibbons