Been awhile since I wrote in this post. I'm fairly certain for William Mark & son James it's referring to Tyrone, Ballyclog, probably Scots misspelt, as there doesn't appear to be a y. As for other son John's place of birth, probably Artrea or Ardtrea, could be Arboe. But I've have come to the conclusion, that registers for my Mark(s) folk just weren't recorded for some reason in that area for that time period. Sadly can be the case for many other people with brickwalls. I've tried varients such as Markes, Markey, Markahan, Merk, Mirk, even the Scots MacMarquis. Not sure about the Anglicised O'Ryder, I read on Lysaghts surname's is a form of Mark, likely in southern Ireland. My folk were Presbyterian, Ulster Scots. I have noticed two or so on the Brigh pew holder lists, but not enough connective evidence. I think there's many Mark(s) in Antrim, Ballymena. Well that's the way it is. Thanks for the input.