On this site
https://churchrecords.irishgenealogy.ie/there are several Michael Coffee/y Cornelius combinations.
Do you happen to know what Michael Coffee's Mother's name was? It should be on the marriage certificate.
it is also useful to note the names of the children of Michael & Honora Coffee as often, they would still be influenced by Irish naming patterns and if you know the children you can often work back to find the most likely father/mother combo.
Name MICHAEL COFFEY
Date of Birth 13 September 1840 (BASED ON OTHER DATE INFORMATION)
Address CUMMEENATAGIL
Father CORNELIUS COFFEY
Mother MARY SULLIVAN
Further details in the record
Father Occupation NR
Sponsor 1 DANIEL CONNELL
Sponsor 2 HELEN MURPHY
Priest REV.D.O'SULLIVAN
Name MARY COFFEE
Date of Birth 25 June 1848 (BASED ON OTHER DATE INFORMATION)
Address KILLARNEY
Father CORNELIUS COFFEE
Mother MARY GREEN
Further details in the record
Father Occupation NR
Sponsor 1 MICHAEL COFFEE
Sponsor 2 ANN KEAN
Priest REV. J. POWER
On register as 3 July 1844
Name MICHAEL COFFEE
Date of Birth N/R N/R N/R
Address N/R
Father CORNELIUS COFFEE
Mother MARY HALLAND
Further details in the record
Child Denomination RC
Sponsor 1 EDD AMBROSE
Sponsor 2 HANORH SHEEHAN
Recorded Diocesan Area CORK & ROSS
Recorded Parochial Area KINALEA (TRACTON ABBEY)
As there are significant numbers of Coffee/Coffey in Co Kerry and Cork & Ross it would probably be a good idea for you to have a look on this site yourself. Happy to look if you are able to provide the names of the children (Michael & Honora) and the name of Michael Coffee's mother.