You probably already have this info but thought I would try to help.

Vearl E Benoy in the U.S.Public Records index was on Douglas Terrace in Dixon Illinois
In the 1930 census William and Jennie Bnoy and son Veral E Benoy lived at 721 south Miami Ave in Freeport, Stephenson county Illinois. Note that ? means I can not read the words for sure.
William is 48 occupation is ? ? machinery.
Jennie is 4?(blurry)
Marguerite W dau is 24 stenographer office
Vearl E is son and 17
Wiliam son is 16
Jack H son is 10
Joyce is dau age 4 and few months. All born in Wisc but the last two who were born in Illinois.
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1920 census this same family:
Freeport, Illinois at 54 fourth street.
William is traveling saleman
Jennie the wife is 34
Marqaret is dau age 14
Genevieve is dau age 11
Vearl is 7
William is 5 and baby Jack is 2 months.
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Jennie was born 14 jul 1885 died March 1976
V.E.Benoy born 11 may 1912 died April 1912
last known address Dixon, Lee county Illinois.
Jack Benoy born 15 sept 1919 died sept 1983 and last known residence was Lodi,Wisc.
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World war two draft cards:
William Frederick Benoy born 10 june 1881 was born in Wisc but living in Freeport Illinois at 721 S.Miami Ave
Birth city in Wisc seems to be Aressa,Wisc.
Have to go for now.Sorry not to be of more help but thank you for an interesting query.