I am looking for the parents of my grandfather Michael Thomas McCall born 1892 Wisconsin. His father has the same name according to his death certificate & mothers name is Mary.

I find a Michael Thomas Mc Call and wife Mary in the 1900 census in Deadwood, but Michael Jr., who would have been 8 at that time, is not with them.

These McCalls are also in the 1910 & 1920 census & from what I can tell they are living in a hotel or boarding house on Main St.  Mary dies in 1920 per South Dakota Death Index, but I can find no death record for Michael Thomas McCall.

I am trying to prove these are the people that are the parents of my grandfather, Michael born 1892. Does anyone have any additional information on Michael Thomas & Mary McCall?