Map updated to reflect territory shifts. Ironstone Islands are now split between The Wound and the Jarldom of Jorvik, with House Bloodhorn occupying the fiefs formerly in anarchy. House Summer has conquered his fellow vassals. House Abel has occupied Everfallow. House Behringer has occupied Falkwreath Country and Trischland.
Also, KabenSaal, your fort does not come with a Grand Manor. It is simply a fort. It has walls that are apart of a main foundation. It's just as good as a Great Walls and Great Manor in terms of defensiveness, without the need to upgrade either. It's like that as a way to compensate for mercenaries being generally weaker than Lords.
That said, you can build whatever you'd like there.
Also, KabenSaal, your fort does not come with a Grand Manor. It is simply a fort. It has walls that are apart of a main foundation. It's just as good as a Great Walls and Great Manor in terms of defensiveness, without the need to upgrade either. It's like that as a way to compensate for mercenaries being generally weaker than Lords.
That said, you can build whatever you'd like there.