I've not got it online yet. I've some work to do. Top of the family tree is a John Murdock born in Scotland 1595 and came to Ulster presumably as part of the plantations. His son Alexander born 1631 in Ulster and then grandsons Archibald 1662 and Alexander 1669. Archibald's son James 1748-1842 and some of his direct descendants Archibald (1792-1872), Alexander (1829-1899) are buried in Forkhill Church of Ireland graveyard in Armagh. I have pictures of these. Do these match up with your side at all?