From Ancestry.com records (Ireland, Catholic Parish Registers, 1655-1915) I found baptism records in 1829 in the county of Limerick for:
- Catharine Kenedy on 31 Dec 1829;
- Catharina Kennedy on 23 Dec 1829; and
- Cath Kennedy on 12 Jan 1829
Loosening the year range of my search to 1828-1830 brought in another 6 candidates. Father and mother were named on each baptism with none of them naming the father as an Andrew and only two of them naming the mother as a Mary.
Loosening the year range of my search to 1827-1831 brought in another 7 candidates but still no father named Andrew and only one Maria added to the two Mary's.
Depending on the reliability of your source for the names of Catherine's parents, I think you should keep an open mind as to their names. If you are confident that you know the name and birth order of Catherine's children then they may give hints as to her parents' names.
FamilySearch says that:
A traditional naming pattern was often used by Irish parents until the
later 19th century:
- First son usually named for the father's father
- Second son usually named for the mother's father
- Third son usually named for the father
- Fourth son usually named for the father's eldest brother
- Fifth son usually named for the mother's eldest brother
- First daughter usually named for the mother's mother
- Second daughter usually named for the father's mother
- Third daughter usually named for the mother
- Fourth daughter usually named for the mother's eldest sister
- Fifth daughter usually named for the father's eldest sister.