sentences:  There was settlement in the Raheny area dating back to at least Celtic times, and it is believed a Christian establishment back to early Christian times in Ireland.The Parish of Raheny was erected in the 12th century, not later than 1152, probably initially in the Archdiocese of Glendalough and then in the Fingal Deanery of the Diocese of Dublin, and almost certainly had had a church for many years by then.The first surviving reference to a church building in the area dates from 1189, in a Papal Bull of Clement.