The Illinois Supreme Court on Tuesday assigned Mary Ellen Coghlan to the 1st District Appellate Court.Coghlan, who until the appointment served as presiding judge of the Cook County Circuit Court’s Probate Division, fills the vacancy left by the retirement of Justice Mary Anne Mason last week.The 24 justices of the 1st District Appellate Court are sorted into six divisions. Coghlan will take Mason’s seat in the …