Researching Francis MCMAHON and Anne DUFFY born and resided in County Monaghan. May have lived in Gragernagh or Ballybay area. Immigrated to Lowell, Massachusetts (exact year unknown-between 1880 and 1888 and then returned to Ireland within the year). Both died in Ireland (Francis died after January 1, 1890; am assuming Anne died before Francis). They had three children: Patrick, Mary Ann and Ellen ("Nellie"). Thanks. Nancy