Ohio Revised Statute 1.49 provides:
If a statute is ambiguous, the court, in determining the intention of the legislature, may consider among other matters:
(D) The common law or former statutory provisions, including laws upon the same or similar subjects;

Bobo v. Jewell, 38 Ohio St. 3d 330 - Ohio: Supreme Court 1988 provides:
In Ohio, names may be changed either by resorting to a judicial proceeding or by the common-law method of simply adopting a new name, so long as the change is not made for fraudulent purposes. Pierce v. Brushart (1950), 153 Ohio St. 372, 380, 41 O.O. 398, 402, 92 N.E. 2d 4, 8.

Affidavit