Oh, you're looking at the Catherine O MARA in Roath, Glamorgan, Wales on the 1881, parents William & Bridget......born 1862? That looks promising as well...sorry, can't post numbers, by back button now erases all information...
(Gadget, you're the techie is that flash doing that? Both browsers all of a sudden started doing that about a month ago!

)
There also this on the BMD for births..
Births June Q. 1862 for Cardiff
Catherine Marrah vol. 11a, p.216
Nothing quite falling into place on this puzzle, yet, huh?

J.J.