The heart of the River Kingdom. Proud Vassa (7), the capital of the River Kingdom, plies its ships on the Narrow Sea. Rhys (1) on the isle of Anton would rival Vassa but the Northern Ocean is often too rough for trade. The hill baronies (3)(4)(11) and (12) are notorious for backing the Duke of Rhys against Vassa in disputes. Vassa makes sure the Griffins teeth (5) and (6) are manned by Barons loyal to Vassa. Notice the interlocking patrol zones between the Castles of the River Kingdom. Not all areas are completely patrolled though. There is lots of unpatrolled country in the Coast Hills in the North, and the Crag lands to the South, and the Griffins Leg marsh near Vassa, and who knows what dark secrets lurk in that little grove between (12), (14), and (19)
P.S. This being a sandbox era campaign I usually let the dice determine who lived in what castle when the party knocked on the door. Unfortunately those notes are rather sparse.