I've always been given HOON as the spelling, but have to believe there is a possibility that it could actually be HUHN.
My great grandmother, Ora Hoon (Huhn?) (1881-1953), married Calvin Humphrey (1878-1923). They had 10 children: Anna June (1900-1957), John Andrew (1902-1959), Jennie Marie (1905-1968), Margaretta (1908-1979), Louretta (1910-1969), Calvin Kenneth (11 JUN 1912-SEP 1954), Cordelia Myrtle (1914-1974), Harry Litchman (1916-1972), Eleanore Mercedes (2 DEC 1919-22 OCT 1993), Betty Elaine (1923-1995). My grandmother is Eleanore.
I know nothing else about the Hoon/Huhn family, and have found nothing in Census records to help.