I noticed in SA chapters by Wiz and Iamos my character Morgan, from Prelude to a Story, is mentioned as having done some things before SA, 15 Yt. So at the beginning of Prelude I put a bogus date "Year of the Reader 2054" which should be corrected. Prelude was originally supposed to take place in an alternate future where thedude has ruled for fifty years, but since Morgan in SA I assume Prelude's events still occured, just sometime before SA.
So when is that sometime? After the Britayan war of course. So 13 or 14 Yt?