I'm still trying. I was looking at the Ireland, Catholic Pari a h Registers. National Library of Ireland. Page 121 of 185 shows January 4, 1841 baptism .
Portalaise, Maryborough
Same link shows page 136 of 185, January2, 1843 Catherine baptism, daughter of John Welch and Bridget Hennessy.. Can anyone read that location?
Again, same link shows p 151 of 185. March 2, 1845 Mary, daughter of John Welch and Bridget Hennessy
Again, p.161 of 185 shows October 11, 1846 baptism for John of John Welch/Bridget Hennessy.
Check out this record I found on the Ancestry mobile app
https://www.ancestry.com/sharing/29853012?h=871b89
The image showing baptisms Feb-March 1845 isn't from Marybprough. It's from Kildorrery parish, County Cork, Cloyne R.C. diocese. It's next to Limerick border.
Kildorrery R.C. parish
https://registers.nli.ie/parishes/0065 Microfilm 04994/06
https://registers.nli.ie/registers/vtls000634240#page/151/mode/1upBaptism 2nd March 1845 Mary of John Walsh & Bridget Hennessy, Bally_undane
Sponsors Patrick Hennessy, Ellen Hannan
Thanks to heywood for locating correct register.
Added. All 4 Walsh baptisms posted by Lilli were in Kildorrery parish.
6th January 1841 James. Sponsors Pat Murphy, Mary Coughlan
2nd January 1843 Catherine. Sponsors James Walsh, Mary Duane
11th October 1846 John. Sponsors Robert & Ellen Walsh
Parents John Walsh & Bridget Hennessy. Residence Ballysurdane?