There's more. I think there's a few notes you can pick up. The sleeping travelers when woken up and encountered in Broken Valley's village quote Bellegar and I think another of Bellegar's quotes is in Brave Sir Robin's hunting record.
Also, the crashed ship that's lodged in between some ruins (only reachable in dragon form) on Sential Island contains a note about a shipment to Broken Valley...Bellegar is mentioned here and I think he lives in a Dark Tower, so it says anyway.
