The stone says Banagher Court, which is the name of the estate and marked as such on https://www.openstreetmap.org/way/118848006.  You can see it on Mapilliary at https://www.mapillary.com/app/?pKey=1893604877501546&focus=photo and on Streetside at https://www.bing.com/maps?cp=52.351493~-7.333436&lvl=17&dir=104.413&style=x&v=2&sV=1.