440-974-8484 | Mentor, Ohio

OSBA Certified Specialist

Darya Jeffreys Klammer


Darya Klammer is a Certified Specialist in Family Law. Certification by the Ohio State Bar Association is only awarded to those attorneys who successfully pass the specialized certification examination. Certified Family Law Specialist are also required to take additional specialized continuing education training.

On a daily basis, Darya Klammer works with clients to understand and resolve family law disputes, be it a complex divorce or simple dissolution, interstate child custody or routine child support matter. She was former Chief of the Criminal Division of the Geauga County Prosecutor’s Office. As an experienced former assistant county prosecutor and graduate of the National College of District Attorneys, Career Prosecutors Course, Mrs. Klammer has the breadth of experience to evaluate and understand legal disputes with the gravest of consequences. For instance, from 2000 until 2003, while an assistant prosecutor, Mrs. Klammer was a critical component of the team focused on the prosecution of three individuals charged with a brutal murder, burglary and felonious assault. In addition to a number of appellate disputes, she successfully argued before the Ohio Supreme Court in 2002.

As an experienced litigator, Darya quickly expanded her practice to all areas of trial work and finds great enjoyment in advising clients in domestic relations and family law matters. She was the Supervisor of the Child Support Division of Geauga County Prosecutor’s Office. She shares the philosophy of The Klammer Law Office, Ltd. that as a boutique firm, disputes must be carefully evaluated and strategies mindfully designed.

Practice Areas

Trial & Litigation; family law and domestic relations; divorce, child custody and child support.


  • Cleveland-Marshall College of Law
    Cleveland State University
    Juris Doctor, 1997, Cum Laude
  • Cleveland State University
    B.A., 1992
  • National College of District Attorneys
    Charleston, South Carolina
    Graduate, Career Prosecutor Course for the National College of District Attorneys
    June 2000

Admitted to the Practice of Law

  • United States Supreme Court, 2009
  • Ohio Supreme Court, 1997
  • United States District Court for the Northern District of Ohio, 1998

Public Sector Practice

  • Magistrate, Mentor Municipal Court
  • Special Prosecutor to the Village of Fairport Harbor, 2004-2005
    Investigation and prosecution of village employees

Professional Associations

  • Lake County Bar Association, 1997-present
    - Co-Chair Domestic Relations Committee
    - Past Criminal Justice Committee, Chair
    - Law Day Committee, Member
  • Cleveland-Marshall Law Alumni Association, Life Member
  • Ohio Association of Criminal Defense Lawyers 2006 - present

Community Experience

  • Mentor Schools Foundation, President
  • United Way of Lake County, 2006-2007
    Campaign Cabinet Division Co-chair
  • Lake County Metroparks
    Green Ribbon Committee Member 2005

The Guide to Ohio Divorce: Do's, Don'ts, Tips and Traps.: Some Basics and Some Advanced Concepts. by Darya Jeffreys Klammer Esq. (Nov 6, 2012)Publications and Speaking

  • The Guide to Ohio Divorce: Do's, Don'ts, Tips and Traps.: Some Basics and Some Advanced Concepts., 2012. Available at Amazon.
  • The Retirement Asset Minefield, Ohio State Bar Association Newsletter, Vol. 33, Issue 3. [Click here to view PDF, 102Kb]
  • Expert Tips and Secrets to Find the Hidden Income of Self Employed Spouse, with Examination Pointers, Speaker, 2013 Family Law Seminar, Lake County Bar Association, March 8, 2013.
  • A Powerful Tool: Court Ordered Psychological Testing in Child Custody and Visitation Cases, Citation Lake Legal Views, Vol. 32, Number 9, (2009). [Click here to view PDF, 115Kb]
  • Intercountry Adoption: A Need for Mandatory Medical Screening, Cleveland Marshal College of Law, Journal of Law and Health, Vol. 11, 1996-1997.

Noteworthy Litigation

Criminal Prosecutions - Aggravated Murder and Attempted Aggravated Murder: As the assistant prosecuting attorney responsible for all case management, pleadings, and appeals for the state on each of three defendants involved, and upon the bindover and subsequent trial of the only defendant who did not enter a guilty plea on an indictment for two counts of aggravated murder, one count of each attempted aggravated murder and aggravated robbery, defendant Holder was convicted of aggravated murder, one count of each attempted aggravated murder and aggravated robbery. The remaining defendants entered pleas of guilty to all charges.

Discretionary Appeal to Ohio Supreme Court by the State of Ohio: As the assistant prosecuting attorney responsible for the appeal of a decision of the court of appeals, the discretionary appeal was allowed by the Ohio Supreme Court. The court of appeals decision vacated following argument.

We remind the reader that every case is different. While these case examples are meaningful to us, they should not be taken as a promise for a certain result in your case. Be sure to talk with us in detail about all the facts of your case so we can see if we can help.

Legal questions? Our team is here to help.