These 2 ancestors [William and Martha Medcalf] emigrated from Ireland to Ontario Canada in 1819 with 10 children we think. They are from Delgany, Country Wicklow but have not been able to access any information about them before coming to Canada. Much appreciated for any suggestions.
Diane - this is where Google is your friend (or any other search engine you prefer). A quick search using search terms "delgany ireland church records" brought several results indicating that these records are online.
After going to the website and downloading the PDF files for the transcribed records of THE PARISH REGISTERS OF CHRIST CHURCH, DELGANY VOLUME 2 BAPTISMS 1777-1819, MARRIAGES 1777-1819 & BURIALS 1777-1819, I found the following baptisms for children of William and Martha:
27 Jun 1805 John MEDCALF Wm/Martha, Downs
9 Feb 1812 Henry MEDCALF Wm/Martha, Downs
16 Oct 1813 Will’m MEDCALF Wm/Martha, Downs
"Downs" is their residence. I am sure you can find much more by downloading and searching more records.
You should also search the Upper Canada Land Petitions to see if the family applied for land once in Canada. Their petitions may reveal more about their lives in Ireland. You may wish to read my tutorials on searching those petitions and finding the actual images onlline once you have completed your search in the index.