Dave--Have you checked in with the Dakota Cty (MN) Historical Society? They have a file of Gallaghers and all of the folks you mention are included there. Thomas, Margaret, Michael & Maria are all buried at St John the Baptist Catholic Cemetery in Burnsville, MN. The tombstone dates vary a little from what you state, but seem to be pretty close. It gets confusing, since there are two prominent Gallagher families in the area, not related. My research is with the other family. If you are not from the Twin Cities area, let me know and we can try to work something out to get this info to you.