Hi Johnstives and welcome to rootschat
markharrison1973 will hopefully have more family information that will help you
I just did some research when this was first posted
However for you immediately in case you don't have
Celia BRESLIN m James BRYAN on Jan 27 1895
LINK to church recordLINK to Civil recordMary BRESLIN (Celia's mother) died Mar 10 1895
LINK aged 61
shown as aged 59 on burial record at Deansgrange in grave A171N
Daniel (her father) may possibly have died in 1874
LINK record is not yet online
Marriage of Danielum BRESLIN & Marian KILALEA on Nov 13 1859 Cootehall, Co. Roscommon
LINK to church record
There is a birth for Mary BRESLIN b Jun 09 1884 to Mary BRESLIN of Tivoli Ave
LINKThere is also a death for an 18yo Mary BRESLIN on Jul 28 1884 who died of metritis (inflammation of the uterus) of Tivoli Ave
She was buried in Deansgrange, also in grave A171N on Jul 28 1884
I think that this is the 16yo with Celia BRYAN in 1901
and that she married Patrick BYRNE on Jun 06 1904
LINK to civil record and to
LINK to church recordI believe she was treated as a child of Daniel & Mary after their daughter Mary died in 1884
but that Celia (or her husband) correctly showed her on the 1901 census as a niece.
Patrick BYRNE & Mary BRESLIN had at least six children
LINK plus
LINKThey are on the 1911 census with the four eldest
LINK at house 27 in Sarsfield Street (Kingstown No. 2, Dublin)