In 1850 Ross County Census Record I found the following in Deerfield Twp: Levin Willis 40 yrs old farmer b Ohio Lina39 yrs oldb Deleware John W.15 yrs oldb Ohio William M.13 yrs oldb Ohio Franklin10 yrs oldb Ohio Nelson8 yrs oldb Ohio James6 yrs oldb Ohio Martha G.2 yrs oldb Ohio Jacob1/12oldb Ohio
In Brown`s Chapel Cemetery I found a Listing for : Levin Willis died 11-30-1859 42yrs9m5das Nelson Willis died 2-6-1868 26yr11m22das
I found a Lina Willis but birthdate was many years after like 1868 , different one . Other Willis`s are listed on Family plot but are son`s of others.
Good Luck. Keep the family alive by remembering those who are gone