Canna is a very unusual name:
Search on:
http://www.census.nationalarchives.ie/search/And you will see it only rewturns 26 individuals in 1911. Just in case they are all related you might make a note of this, even though it appears unrelated at present:
Headstones: WICKLOW, Redford (Catholic) Cemetery, Greystones, Co.Wicklow, Part 3
Ireland Genealogy Projects Archives
No.312
In Loving Memory | of | PATRICK CANNA | 16, Lower Kindlestown | died 26th April
1972 | aged 67 years | also his wife, JANE CANNA | died 5th Aug. 1994, aged 82
yrs. | also their sons | CHRISTOPHER | died 22nd December 1978 | ANDREW (ANDY)
CANNA | died 18th Nov. 2003 (Australia) | R.I.P.
Lower Kindlestown in in Greystones - five miles from Bray.
PM
later -
Andrew Canna married Philomena Byrne:
Same derails for both Ireland, Civil Registration Indexes, 1845-1958
https://www.familysearch.org/Registration district: Rathdrum
Year: 1872
volume number: 2
page number: 973
If you order this cert from GRO Roscommon, you will get the fathers of Philomena and Andrew, occupations etc.
Only looked at the period you mentioned.
https://www.familysearch.org/search/collection/show#uri=http://hr-search-api:8080/searchapi/search/collection/1408347To look for Agnes and sisters.
PM