Thank you to all for this excellent discourse on the ancient graveyards of Magilligan, which has been a great help to me, far away in the USA. My Sweeney, McNally, Redgate, and Canning ancestors are buried at St. Aidan's and (probably) the COI graveyard. I manage a very old cemetery in Pennsylvania, and I hope I might offer some advice based on my own experience. Your ancestors might well have erected a gravestone which is still there, but "invisible."
Frequently gravestones become unstable, fall, and are simply left in place by caretakers. Within a very few years, their weight pushes them down into the soil a few inches and they are quickly covered by a layer of grass sod and become invisible. Thus, you might look at a spot where your ancestors ought to be and see nothing, when in fact there are gravestones a few inches (usually four to six inches) under the grass. You can detect them by taking a thin but strong metal skewer (like for shishkabob), probing the soil, to see if you can detect the general outline of such a stone a few inches down. (Of course, Irish graveyards are full of stones of all types, but the outline of a fallen gravestone is fairly distinctive.) If you discover a gravestone, you do have to get the permission of the cemetery caretaker to cut the sod and roll it back to uncover it, but it is usually worth the effort, especially if the stone fell face down and the inscription has been protected from the elements for a long time. No harm is done to the grave site, you can just roll the sod back after. (Of course, if the stone fell face down, you'll need some help to gently turn it over to read the inscription. Those things are hundreds and even over a thousand pounds in weight.)
I look forward to following your continuing discussion.
Sincerely, Barbara Miller, Allentown, PA
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