This is the U.S. Federal Census of 1910, Bevent, Marathon County, Wisconsin. It shows the Barney Kostka Family. Barney is recorded to be 39 years old; Martha is 27. Then there's Eddie, Bernard, Bertha and Florian, ages 10, 9, 6, and 4, respectively. The last member listed is that of Barney's father, John, who is recorded as being 55 years old. If true, then he would have been 16 years old when Barney was born. This reaffirms our position that the census is only as accurate as the exchange of information between the provider and the enumerator, (census-taker). Take a look at the 1930 census record and compare the ages with these of 1910 to see how the information varies.