In any township in which the board of township trustees has erected a memorial monument as provided by section 517.30 of the Revised Code, or in which the citizens thereof have erected such a monument, either upon the public grounds of such township or upon grounds therein donated or procured by the citizens for such use, and have caused such grounds to be enclosed, the board may take charge of such monument, grounds, and enclosure, and keep them in repair. For such purpose the board may appropriate and expend such sum of money as required from the township funds.
R.C. § 517.31