As per reply #2, Father John is now likely to be the correct one.
Is this the death of Anne (wife No 1) in 1870, and he marries Sarah Feel(e)y the following year.
Name ANNE MITCHEL
Date of Death 1870
SR District/Reg Area Manorhamilton
Deceased Age at Death 35, Returns Quarter 3
Returns Volume No 12, Returns Page No 138
This death record is not yet on-line.
KG