Ohio Rev. Code § 505.01
In each township there shall be a board of township trustees consisting of three members. Two of such trustees shall be elected at the general election in nineteen forty-nine and quadrennially thereafter, in each township, who shall hold office for a term of four years, commencing on the first day of January next after their election. The third trustee shall be elected at the general election in nineteen fifty-one and quadrennially thereafter, in each township, who shall hold office for a term of four years, commencing on the first day of January next after the person's election.
At the first meeting of the board each calender year, the board shall select one of its members to serve as chairperson for a term of one year. If the position of chairperson becomes vacant, the board shall select one of its members to preside.
R.C. § 505.01