Awesome documentation, as usual, Manny.
What was the timeframe for the Eleventh Imam?
The Twelfth Imam Legend is a bit like that of King Arthur (who is either in a cave or on an island from where he will return to rescue Albion in her Time of Need) or of either Frederick II or Frederick Barbarossa (cave, who will return to help the Germans in their Time of Need.)
Not to be confused with the Lone Ranger who appears to help Pioneers in their Time of Need.