I have known this for a while but here is the actual record of Johannes (Johannes is the Latin name for John...and Jan is the Polish name for John). They came in a tCastle Garden in New York...Ellis Island did not start admitting immigrants until 1892.
Here is the family mystery: In the 1900 census, Maggie declared that she had given birth to 7 children and that 5 were now alive. Since there was an unusual span of years between Anton and Marie, I think she had 2 babies that died in the years between the births of Marie and Anton (5 or 6 year span). Who were these children?