My grandparents were from Kilbride,Mountnugent Parish, Co Cavan William Galligan , m. Bridget Gaffney my grandparents Daughter Catherine m. James Sorahan Son Patrick "William " James "Henry Rose Galligan m. Hugh Ballisty Mary m. John Comasky John Galligan m. Alice Farrelly Bridget Galligan m, Patrick Smith Can you tell me how one gets a DNA ?3