Malew would be the cemetery (but at moment all are closed due to Covid19 restrictions except for actual burials) - like now with Covid19 the cholera epidemic caused problems with disposal of the dead - most larger towns buried victims quickly in communal graves some of which had small stone markers marked cholera - also like now it generally hit the poorer harder than the well to do and these poor would have little money to spend on grave markers.

There was some social antagonism against Catholics tho I suspect much of this was against the influx of poor Irish escaping poverty in Ireland (this predates the potato failure) - tho there were Roman Catholic churches there was not enough Catholics to support resident priests thus Catholic records of this + earlier periods are dispersed eg some are in Ireland as a Dublin church provided priests - marriages on Island would be in for legal purposes (children from non licit marriages were officially illegitimate and thus could not inherit property tho this would not be that important for the poor) be have to be in C of E churches tho there would probably have been a Catholic ceremony as well