Hi Shane and Darrin,
That's great information about the Irish sites and apart from new information about witnesses, we have no further evidence of Patrick Tracey's parents, would an Irish death certificate carry the parent's names. I don't know date of death yet but that maybe only way of finding out.
Darrin, I had a look at Knockcroghery on Google maps, along the N61 road there is a clay pipe workshop and visitor centre, apparently Knockcroghery, our Patrick and Martin were clay pipe makers apparently. Also Wikipedia mentions a RC church, St Patrick's built circa 1870, which is 9 years after the marriage of Patrick and Elizabeth, so their may have been an older church before.
Tom