Stoner, Katherine: - Katherine E. Stoner is a superior court commissioner in Monterey County, California. Prior to that, she was a certified family law specialist, with a practice focused primarily on family law and mediation. She was a founding member of Collaborative Practice of Monterey County. Katherine has been a trainer at the Center for Mediation in Law in Marin County, California, and is an adjunct faculty member at Monterey College of Law, where she teaches community property, family law, and mediation.