Removing Old Calendars... That Mail is spotting!

[mac98aop]

Really hope some one can help....

Over the years, I've had local calendars, GCal, and now all on iCloud and very happy. It is the only Calendar account that is active in iCal preferences.

But, I love the feature in Apple Mail, especially when I can add an iCal entry by merely clicking a date/time in a message.

However, when I do that, it opens a helpful window showing my calendar that day. But there's all sorts of calendars listed there, and not just my iCloud one.

So, I wanted to clear that old clutter, and wondered where they're all being stored so I can remove them.

I tried looking in Library, but it's not easy working out which calendars are legacy, and which iCloud. Wondered if I could then just move the old ones to an archive folder so that Mail can't see them again?

Any ideas folks, greatly appreciated.

Screen clutter on my brilliant MB Pro, just does not compute for me!

Thanks folks

Adam