Although John Olson is a very common name, the family demographics and the close proximity of Hans Alm seem to indicate that this entry in the 1895 census is for "our" John Olson.  He and Oline were both born in Norway, and in 1895 they had two daughters, Helga and Johanna.

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The five members of the Hans Alm family living in Ashland were most likely

Hans, Anne, Iver, Oscar, and the first Alvin.

The first Alvin was born December 31, 1894.  Based on the census, he was still alive in June of 1895.  The first Julia is reported to have been born and died in 1895. The census offers a clue that Julia was likely born in the latter half of that year.