I cannot speak for all jurisdictions, but in the state of Utah (where I practice divorce and family law), if you know that a couple is divorcing or is divorced, and you know the name of at least one of the members of the couple (and it wouldn’t hurt to have a birth date to, especially if the name of the person getting the divorce is a common one like “Mike Smith”), then you can either go to the courthouse or get online to check court records, find the case number under which the divorce action was filed either by one of the spouses or against the other spouse, at which point you can discover who the petitioner is or was (the “petitioner” is the name of the party that initiates the divorce action, and the “respondent” is the name of the spouse was being sued for divorce).
Utah Family Law, LC | divorceutah.com | 801-466-9277