Rostenkowski was born into a political family in Chicago to Joseph P. and Priscilla (Dombrowski) Rostenkowski. His grandfather Piotr had immigrated from the region of Tuchola, Poland. His father, Joe, locally known as "Big Joe Rusty", served as alderman and committeeman of the predominantly Polish 32d Ward in what was then known as "Polish Downtown" for 24 years. As a child, Dan and his two sisters, Marcie and Gladys, often saw their family home double as a meeting place for precinct captains who, like Walter Kmiec from his father's ward organization, would later assist him in bringing in the vote in 1960 for John Kennedy.