Hi Wicklow Way,
That baptisim looked very promising and well worth a try, but it turned out that the Mother's name is Eliza Power.
The baptism was Eliza Doyle 15 Aug 1849, Baltinglass Parish, Roman Catholic, Father John Doyle, mother Eliza Power.
This John Doyle and Eliza Doyle could be the ones that I have found recorded in the Griffiths valuation.
My Eliza was married in Sydney in 1865 when she claimed to be 22. This one would have only been 16 and there is the difference in the mother's name.
Thank you very much for your help, I have printed it out and can come back to this one if needs be, but I think I will keep looking to try and get a better fit. As you said this was the only Eliza Doyle (RC) baptism for that period and the COI doesnt come up with any, since their records dont start until some time about 1877 .
Wyanga