Renke on Family Tree Circles

We know that they came over in 1913 and they came over on the ship called the president lincoln. My great grandfathers name was Josef Racz and My great grandma was Anna Racz ( Valentine) My grandpa was Karl Racz who was 3 when he arrived here. He also had 2 half brothers and a sister. We are looking for info on history from before Josef, like his parents and earlier. Any info is welcome on finding more family though.