Mary Horrigan is the daughter of Patrick Horrigan who was born in Ireland 1850 and grew up in Preble County, Ohio. His parents are Thomas and Catharine Mungavin Horrigan. See Patrick census records for Preble County for 1860 when he lived with his parents. ALso go to the Eaton, Preble County library site and you will find Patrick's marriage licence and obituary in 1932 with Mary Iffland's name as his daughter. I have no idea how Mary ended up in Tenn. as her brothers and sisters seem grounded in Ohio, especially Preble County. Patrick, the father is buried in Old Saint John cemetery in New Paris, Preble Co. which you can find on findagrave.com.