Think he might have married twice no2 being Margaret McFadden
Shane Gallagher married one of these people
Mary Gallagher, Bridget Gallagher, Margaret M'Fadden, Catherine Gallagher, Bridget Sweeney, Eugene Curran
Full line for above
This is a list of all Shane Gallagher deaths (also included "John") from 1885-1920 on IrishGenealogy where you can view & download the certificates FREE.