I have some civil death records for Duhig's
The first one might be one of my people unless you know differently. I paid for them on another site and thought they might be of use to someone else. Please let me know if they are of any use.

Denis Duhig died 1st July 1900
Hospital and Herbertstown Knocklong Limerick.
Married
Aged 80
informant W.McCann (neighbour)

Matthew Duhig died 8 Dec 1864
The Green Bruff, Bruff Limerick.
Married
aged 56
Informant wife, Mary Duhigg

Matthew Duhig died 20th Mar 1867
Garbally Bruff Limerick.
Farmer, married.
age 84
Informant Mary Fitzgerald.

Matthew Duhig died 12th Nov 1887
Bruff Limerick
Married grocer, aged 62
informant son James Duhig.

Matthew Duhig 25th Jan 1868
Ballylanders Galbally Limerick
Widower aged 70
Informant Robert Murphy.

Johanna Duhig died 6th June 1878
Newcastle Limerick
Married aged 70
informant Michael Bryon.

Johanna Duhigg 4th May 1866
Widow aged 80
Limerick NO.2

And that's the lot ! I hope they are use to someone.