John McCullen steps through a gate and into a small, green pasture. Like so many fields north of Dublin, this five-acre section of the McCullen family farm is gently rolling and lush even in late winter. His steps are purposeful, his gestures deliberate and emphasized with a short walking stick as he approaches the centerpiece of the pasture: an old stone tower that looks no more remarkable than the multitude of other ruins scattered around County Meath. McCullen had a feeling there was more to the tower, however. One day,…
