Local ecclesiastical sites prospered at different times, The medieval parish of Straffan lies on the border of the Diocese of Dublin (boundaries established 1111), to the south of Taghadoe Parish (Teach Tua), bounded on the west by Mainham, south by Bodenstown and Whitechurch, and east by Killadoon and Castledillon. Ecclesiastical sources refer to Straphan Register of the Hospital of St. John the Baptist 1245, the Calendar of Justiciary Rolls 1306 and the Regal Visitation 1530 which describes Straffan as 'a church of the deanery of Saltu Salmonis. In 1541 Straffan was united with Castledillon, Donacumper and Kildrought.