PATRICK KELLY AND CATHERINE MAHER

This excerpt is from the 1850 Dublin City directory. Note I have highlighted "provision dealer," which was a grocer.  This could be your Patrick.

 

Patrick, 178 New St (shoe maker)
Patrick, 55 Old Church St (broker)
Patrick, 53 South King St (occup not listed)
Patrick, 1 Little Denmark St (upholsterer)
Patrick, 17 Townsend St (dairy)
Patrick, 156 Townsend St (dairy)
Patrick, 35 Bride's alley (coal merchant)
Patrick, 27 Beresford St (provision dealer)
Patrick, 10 Usher's island (carpenter and builder)
Patrick, 35 Nicholas St (tobacconist and chandler)
Patrick, 131 Lower Baggot St (cook and confectioner)
Patrick, 172 Townsend St (spirit dealer)
Patrick, 31 Essex quay (umbrella maker)
Patrick French, 76 Eccles St (Esq.)
Patrick Joseph, 76 Eccles St (Esq.)
Patrick Joseph, 19 Bolton St (cabinet and upholstery manufactory)

Do you have an approx age for Mary Ann Field? On rootsireland there are  births for two Mary Fields in Cavan. Sadly, both of them were abandoned babies.

 

If you have an approx age, I will send you the appropriate record.

From what we have from her headstone she was born 1830 Cavan. She died in Bathurst N.S.W on the 16 September 1916.
Appart from records of her children's birth and her death record we know nothing else about her

RootsIreland shows the baptisms of

1 Mary Fields, 8 April 1832, in the Church of Ireland. Lived in Carrigacrew in parish of Kildrumferton, Cavan. Parents unknown. Foundling.

2 Mary Field of Correah, bap. 04-Mar-1827 in RC parish of Lurgan, Co. Cavan. Sponsors: James and Catherine Ivers. “This child’s real name was unknown, as she was deserted in a field.” See register here: https://registers.nli.ie/registers/vtls000634886#page/1/mode/1up