I am needing help in finding birth/christening records in Donegal for

John Mclaughlin Jr.-
b.abt. 1813, Donegal,
to John McLaughlin Sr. and Mary unknown.

Religion of parents -taken from 1851 Ontario Canada census-*Church of England*

John Jr. arrived in Ontario Canada about 1834 and was married in Ontario 1835.
We suspect John Jr. was a passenger on board theShip Ambassador in 1834, leaving Londonderry Ireland for Canada.
Your help is greatly appreciated,
With much thanks,
Pat