Lying in Glenn Sechis, a mountain valley in County Down (near Rostrevor), Cell Brónche lay at some distance from the major political centres of the region. It may have been a nunnery in origin, but later came to serve as a pastoral church manned by nuns as well as one or several priests. It was chosen as the parish church of Glenn Sechis. A high cross which survives among the ruins of Cell Brónche attests to the importance of her church. It is made of Mourne granite and stands over the traditional site of her grave in the old cemetery. It is part of the "Saint Patrick’s Trail". The building suffered damage during the 1641 Rebellion, as well as in Cromwellian times.