Hi Sandra,
Welcome to Rootschat. The records I have here end at 1917, so I can't look for the burial of Maria Keenan, sorry. If you have the parents names for Patrick I could have a look for him.
What I did find is the burial of one of their children.
PATRICK DONNELLY. Wishaw, aged 11 months.
Parents - Patrick Donnelly and Maria Keenan.
Interred in public ground, 21st May 1878.
What you should do is look for the birth of this child, it should give his parents date and place of marriage in Ireland.
I checked the 1881 census.
(1881 - 628 - 20 - 30).
20 Berryhill Front Row, Wishaw.
All surnames are Donnelly, apart from the last.
PATRICK, head of house, iron worker, married, aged 36 years, born Ireland.
MARIA, wife, married, aged 36 years, born Ireland.
MARY, daughter, unmarried, aged 17 years, born Ireland.
JOHN, son, aged 15 years, born Ireland.
BRIDGET, daughter, aged 12 years, born Ireland.
MICHAEL, son, aged 8 years, born Newmains, Cambusnethan.
ELIZABETH, daughter, aged 6 years, born Newmains.
CATHERINE, daughter, aged 6 months, born Wishaw.
PATRICK GILHOOLY, lodger, aged 35 years, unmarried, labourer, born Ireland.
So, the 1901 census works out right, the parents are still alive and their younger children are with them.