looking for

[lynda conniss]

Hi i am trying to find the marriage of Bridget (Delia) Regan she was born in 1859 died 1919 i think she came from  Roscommon Parents names  Thomas Regan and Margaret Lynch .
Thankyou for any help Lynda

[HistoricalGenealogy]

Taking this literally for the parents rather than date wise appeals a exact match:

Brigidam Regan - Baptism - Febuary 4th, 1851 - Cootehall, County Roscommon, Ireland
https://www.familysearch.org/ark:/61903/1:1:6TCW-V9SC

Edit:
OP is looking for marriage, and I did not read the request properly. If this baptism is taken seriously, this is her marriage certificate:

Brigidam Regan - Marriage - Febuary 6th, 1876 - Cootehall, County Roscommon, Ireland
https://www.familysearch.org/ark:/61903/1:1:6TF1-MV19

[lynda conniss]

Thankyou 
Lynda

[heywood]

Who did Bridget marry and where did she die?

[aghadowey]

If this baptism is taken seriously, this is her marriage certificate:
Brigidam Regan - Marriage - Febuary 6th, 1876 - Cootehall, County Roscommon, Ireland
https://www.familysearch.org/ark:/61903/1:1:6TF1-MV19

The civil registration gives the marriage of William Cox and Bridget Reagan as 6 Feb.1876 with a note in the margin.
https://www.irishgenealogy.ie/files/civil/marriage_returns/marriages_1876/11161/8088638.pdf

[Kiltaglassan]

William Cox farming in Foxhill townland.
https://www.townlands.ie/roscommon/boyle/tumna/tumna-south/foxhill/
https://www.openstreetmap.org/relation/4205640#map=13/53.96337/-8.15992

On 1901 census-
https://www.census.nationalarchives.ie/pages/1901/Roscommon/Tumna_South/Foxhill/1660205/
3 sons, 3 daughters

[LH]

Hi

William and Bridget Cox, with four of their children in the 1911 Census below:-

https://www.census.nationalarchives.ie/pages/1911/Roscommon/Tumna_South/Foxhill/758863/

[LH]

Hi again

This looks like the 1931 Death of Bridget (a widow) of Foxhill.  Informant was Michael Cox, her son. See:-

https://www.irishgenealogy.ie/files/civil/deaths_returns/deaths_1931/04902/4328612.pdf

[lynda conniss]

Thankyou all for looking