wherewereyou on Family Tree Circles

Frank Wojtczak immigrated to Marinette,WI sometime between April, 1904 and early 1908. His wife Veronica and 2 children, Roman and Antonia arrived on the Rijndam, in NY on March 25, 1908. The last place of residence for Veronica and the children was with her sister ???Mergalowitz in Marcewo, Russia.
Frank and Veronica later moved to Ladysmith where a third child, Lee James, was born. Eventually, they moved to Milwaukee and are buried there.
We don't know Frank's parents names.
Both Frank and Veronica list their ethnicity as Polish.
Roman never married, last known address was Three Lakes, WI.
Ann married ???Hansen, moved to CA. We think they had 2 daughters, one named Barbara.
Lee James married Dorothy Leirich, moved to CA. They had 3 children.
We would like to find Frank's parents names and Veronica's sister's name.