Armagh ancestors? The surname " Ireland "

Hello.....I am a new member here at Ireland xo...

My name is Robert Ireland. I am researching my paternal ancestry. My dad's paper trail ends/begins in county Armagh, with the emigration of William Ireland (born around 1800-1805). He emigrated to Ontario Canada in the 1820's and married a Francis McManus (1810-1888 from Cavan Ireland) in Niagara, Ontario, in 1829. Tithe Books for county Armagh show a number of 'Irelands' in parish Lisnadill and Derrynoose in the early 1800's. 
I am planning a trip to Armagh late in June. I am curious to know if you have any knowledge of the surname Ireland surviving in your parish. If it is significant, I believe my Irelands were Presbyterians.
Thank you for consideration.
Robert Ireland