In Re Marriage of Kartholl

William Kartholl (father) appeals from an order of the circuit court of Du Page County terminating the parties’ joint custody of their minor child, William Kartholl, Jr. (son), and awarding sole custody to Nancy Kartholl, n/k/a Nancy Jandris (mother). We affirm the denial of the father’s petition for a change of custody, but reverse the trial court’s order terminating joint custody and awarding sole custody to the mother.

The parties are familiar with the facts and thus we recite them only as is necessary to resolve the issues presented. The father essentially makes two interrelated arguments:…