Wrong territory name: There is a territory on island Korčula named Blako, but it should be Blato.
Ironheart is right, there is Iž-Preko missing link (both islands) in Kali bonus, Zadar County.
And since the county is already named Zadar (I always leave the "County" out), I named it after the second-biggest city in the area.
What about Šibenik? There is Šibenik (county) and bonus Šibenik. I'm sure there are more cases like this, but this is example.
I like the system with naval connections! You made that in Europe 1066 too, right? ;)