O'Donahue

I'm looking for realties related to Florence O'Donahue (or other spelling) and Margaret Mullins (daughter of Catherine Mullins, father unknown). They lived in Burlington VT in 1860, and 1870 and 1875 Censuses show them in Jay New York. They both may have been born in Limerick IR. If anyone recognizes these people, please contact me. I'd love to have the solution to this brick wall. Thanks