This census record is the 1930 edition of the Barney Kostka Family, and is the perfect example of how information can lead to confusion for beginner genealogy researchers. In 1900, father John was born around 1950. In 1910, his birth year was 1855. In this record, at age 84, his birth year would be 1846. The real significance of Federal Census records is that we have all the children listed, and we have a supporting document that says that Barney's father was John Kostka, Senior. Barney had a brother also named John.