In terms of a good second step, I would recommend going through the baptisms of all of Denis and Catherine's children to find the names of the godparents, as godparents were often relatives (usually siblings) of the couple.
The Kilteely and Drumkeen parish registers can be viewed for free here:
https://registers.nli.ie/parishes/0271From what I can see, their children were:
- Timothy Magrath baptised 17 Feb 1845
- Patrick Magrath baptised 27 Apr 1846
- Michael Magrath baptised 11 Jun 1848
- Catherine Magrath baptised 9 Apr 1850
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Denis Magrath baptised 3 May 1852 at St Michael's, Limerick city, Limerick - John Magrath baptised 1 Mar 1854
- Denis McGrath baptised 11 Aug 1855
- Honora Magrath baptised 21 Feb 1856
- Terence Magrath baptised 20 Jul 1858
- Maria McGrath baptised 1 Apr 1861
- James Magrath baptised 10 Mar 1864
- Timothy Magrath baptised 24 Sep 1866
Apologies if I have missed any.
Queenie
