In earlier times (in Catholic Europe, at least), divorce was nearly impossible to get - but annulment was easy if you had the money, position, and connections. All you had to do was "discover" that your no longer wanted wife was your second or third cousin - by blood *or* marriage - and send a petition to the Pope (who would, as like as not, delegate the petition to a rubber-stamping Vatican clerk unless the parties involved were *really* important).
(The reason this did not work for Henry VII is that Catherine of Aragon was better connected than he was - her nephew was Holy Roman Emperor and the Pope was in his pocket. And Catherine did *not* want to lose Henry.)
So to be in accordance with pre-modern practice, the field should read "Ex-wife (divorced/annulled)".
