I have found your John and family, but don't think he is brother of the Stanley (wife Daisy). As you will see in 1920 census there is another Stanley listed as brother.
1930 Agenda, Ashland, WI
John age 40 married at age 22 born Poland parents born Poland, farmer, dairy, immigrated 1910
Tillie, age 40, married at age 22, born Poland parents born Poland, immigrated 1912
Stephanie, age 16 born WI
Anna age 14, born WI
Francis age 12, born WI
Victoria age 10, born WI
Walter, age 9, born WI
Joseph age 6, born WI
Frank, age 4, born WI
Anthony, age 3, born WI
Stanley,age 1, born WI
1920 Agenda, Ashland, WI
Lorenz, age 57, born Poland parents born Poland farmer, general farm, immigrated 1913
Mary,wife, age 55 born Poland, immigrated 1913
Carl, son, age 29 born Poland laborer, lumber camp immigrated 1909
Michal,son, age 23 born Poland, laborer, lumber camp, immigrated 1912
Stanley,son,age 18, born Poland immigrated 1913
Tekla, daughter-in-law, age 29 born Poland immigrated 1910
Stephanie, grand-daughter, age 7, born ILL
Nellie, grand-daughter, age 6, born ILL
Annie, grand-daughter, age 5, born WI
Francis, grand-daughter, age 2-6/12 born WI
Victoria, grand-daughter, age 1-1/12 born WI
John is not with them, unless he is Carl, perhaps a middle name???? right age as in 1930 John and Tillie are same age.
AS mentioned this census has a Stanley age 18 so either he is your Stanley or the other one is and if the other one is then John is not his brother???????
At least this 1920 cenus has names of John's parents....did you know their names before??