Hi Richard
There is 1 record of Michael Quinn born Dublin 1827 on www.rootsireland.ie/
I wet through the parishes and found that it was 'Booterstown, Balckrock and Dundrum R C'
However when I searched with the parents' names Daniel and Kate / Katherine included, the match did not come up
I could not find a record of the marriage of Daniel & Kate either I'm afraid
Col