Hi All

Im wondering if anyone can help with some info please?Ive had a lot of help so far off kind Roots chatters and im hoping i can maybe get some more!
Im trying to find out if poss what churches my Ancestors married and were Baptised in i have the following dates
Marriage Banns 21 Feb 1807
Denis McDonald to Mary Dimsey Forester in Paul or Newlyn i think?
Baptism of their children
John McDonald 29th november 1807 again in Newlyn or Paul
Mary Dimsey McDonald 8th October 1809 in Newlyn or Paul
Sometime after 1809 Denis Died maybe at sea as i cant find any burial for him so far and Mary went onto remarry Thomas Richards in 1812.
Its just come to light that Denis was born in Ireland and Baptised as Roman Catholic so im interested to find out if he married in a Catholic church and if his offspring were Baptised in the Catholic church?Are family at some point turned to Church of England and i have a sneeky feeling it may of been after Mary remarried Englishman Thomas Richards,anyone know if its possible to check which churches were used it may be that of course Dennis may not have married as i only have the Wedding Banns record,sorry for the length of thread!Any help at all would be really appreciated
Kind regards
Dunc