Family of Antonia Suchocki and Kazmier Koslowski

I am looking for descendants of Antonia and Kazmier Koslowski or Kozlowski.In the 1900 Census they are listed as having four children:Anna 1894; Frances 1897; Joseph 1898 and Tresa 1900.They were in Dunbar Twp of Fayette Co. PA but believe they later moved to the area of Detroit, MI.Cannot locate them in the Census in later years.

I believe she is my grandfather's sister.