Oberlin v. Oberlin, 2011 Ohio 6245

Married in 2004, one child M.O. (b. 2004).
Mother moved with M.O. to California in 2005; M.O. remained with Mother until Jan 2006, then Father brought her to Ohio.
Divorce decree (Aug 28, 2008): Father was residential custodian; Mother ordered to pay child support.
Dec 4, 2008: Mother sought reallocation; July 14, 2009 magistrate found change in circumstances and best interest in favor of Mother; Mother found in contempt for nonpayment.
March 15, 2011: trial court adopted magistrate, again naming Mother as residential parent/legal custodian, with Father appealing.

Issue	Plaintiff's Argument	Defendant's Argument	Held
Whether a change of circumstances occurred	Father contends no substantial change.	Mother argues second OVI and related facts show change.	Yes, court did not abuse discretion in finding change in circumstances.
Whether reallocation was in M.O.’s best interest	Father asserts best interests favored current arrangement.	Mother argues change due to risks from Father's conduct and stability concerns.	Yes, best interests supported reallocation to Mother.
Whether Mother's failure to pay full child support invalidates reallocation	Father claims nonpayment undermines custody change.	Court found nonpayment a factor but not dispositive against relocation.	No abuse; support failure did not outweigh other considerations.

Davis v. Flickinger, 77 Ohio St.3d 415 (1997) (change in custody requires substantial changed circumstances)
Miller v. Miller, 37 Ohio St.3d 71 (1988) (custody determinations deserve deference to trial court’s factual findings)
Wyss v. Wyss, 3 Ohio App.3d 412 (1982) (significant change required to warrant modification of decree)
Kirchhofer v. Kirchhofer, 2010-Ohio-3797 (Ohio Ct. App. 9th Dist.) (case-by-case analysis of change in circumstances and best interests)