Calidreamin', I know my Mulhollands and McKennas and where they lived around Maghera (Tullyheron, Tirkane, Tirnony etc.,) but all I know is that Donnelly's were their cousins. Unfortunately, I do not know the Townland for the Donnelly's. I just know the Donnellys were from the Maghera area. The rest of the family went to Glen Chapel. All the best.