The only Mary Jane to figure in my McGeown researches is Mary Jane McMenemy who was the wife of Dennis Gallagher. Dennis died when 61 of erysipelas at the Fever Hospital in Linlithgow, not at his home at 22 Niddry Rows, Winchburgh. His death was registered by his son Edward of 4 Niddry Rows but he didn’t seem to know the names of his paternal grandparents, naming them both as Gallagher. One of their daughters, Ellen, married James McGeown Gallagher. Siblings of Ellen other than Edward were Kate, Bella, Mary and Frank. In later life Kate lived in Millgate, Winchburgh; she used to wear a surgical boot on her left foot and became Mrs Kate McKenzie. She had two daughters: Mary, whose married name was McPhillips, and Cathy, who became Mrs Stevens. Kate's grandson is/was John Stevens; her great-grandsons are/were Kevin and Terry Philbin who lived in Winchburgh.
Frank remained a bachelor and lived with Kate and her husband. Edward Gallagher had a son Bob who remained a bachelor and lived in Dalkeith. Bob's brother Dennis died aged 12 as a result of a football injury and there is apparently a headstone in Winchburgh cemetery erected by his schoolmates.
There is some confusion from the records as to whether the surname is Gallagher or Gallacher.