I have some McIldowneys spelled with an I in Griffith's valuation. John, Laurance, Matthew & Joseph. Living in Goretiure townland, parish of Killelagh.The nearest town is Maghera. The McIldowneys were cousins of my gg-grandmother, Mary Bradley. I think there are Bradleys there still. Best regards, Joan,in NY Also interested in Mc Kenna from same area.