there's a possible record match for Maria on the Irish Family History Foundation Website (
www.irish-roots.ie) :
Church Baptism Corrigan Mary 1843 Co. Wicklow
there's also :
Church Baptism Corrigan Margaret 1845 Co. Wicklow
both records are for the RC parish of Baltinglass, Co. Wicklow and show as a match for father's name of John.
The index is free to search once you register - the record transcripts cost €5 to view.The site only has RC baptisms for Co. Wicklow at the moment - no Marriages etc.
Microfilms for this parish are available in the National Library on film P.4192
with Baptism records from 1807 to about 1880 (with some gaps).
The amount of detail included can vary from parish to parish - some have only very basic info, others have very comprehensive details.
Shane