Conversation so far:
What was Richard I of England's occupation?
kings.
What happen in Sicily?
After the death of King William II of Sicily his cousin Tancred had seized power and had been crowned early in 1190 as King Tancred I of Sicily.
Are there any other interesting aspects about this article?
Tancred had imprisoned William's widow, Queen Joan, who was Richard's sister.

Question: What happen after the imprisoned?
Self-contained rewrite: What happened after Queen Joan was imprisoned?