Calendar: Remove old invitee addresses

Hey, not sure if this has been solved since its an old post. I was having the same problem on my iphone, an old email address that my wife used at one point kept coming up as a suggestion for an invite. The problem only presented itself when inviting from my iphone, if I used my macbook pro, the email address did not show up.

I was able to remove the email address from the suggested invitees by opening the calendar app, clicking on the "Calendars" link in red at the bottom. Once in there I unchecked all the selections that add things to my calendar. Like Gmail, Work, Calendar, Home, Family, Facebook Events, etc...

I then went to create a new event, the old email address no longer came up as a suggestion. I went back and rechecked all the boxes that were previously checked and my calendar was repopulated with all the expected events, but that old email address is no longer a suggestion for newly created events.

Hope this helps.

Erik