Researching the Krajewski Family from the Wielkopolski Region of Polan

I am researching the Krajewski family of siblings that settled in Howard and Sherman counties in Nebraska around 1887 from Poland. There were at least 3 sisters and 3 brothers; the oldest brother was Stanley and the youngest boy was Ben (Bernard). There was also an older stepbrother.
Their father's name was Lawrence or Lorenz. He did not come to this country. Any connection to this family of Krajewskis?