I'm trying to track down a Mary Purcell, she was born approx. 1841 in Ireland. She then came to Ottawa, Canada (I'm not sure when) and married a Mr. Johnston. My great-grandfather - her son, James J. Johnston married a Margaret Ellen Malloy and his mother (Mary Purcell) lived with the family in Ottawa until she died of old age.
I don't know who she came over with from Ireland (any parents, brothers, sisters - etc.) I do have a family picture of the Johnston's and Mary Purcell is sitting in the back.