Shrewsbury

Shrewsbury castle marks the border between wales and england. A strong and impressive castle with strong pepole defending it. House Talbot reside in this lands for years past and plans to continue doing it.
Shropshire:
Shrewsbury Castle: Built out of red sandstone on a hill overlooking one of the River Severn's bends, Shrewsbury Castle makes for an impressive seat of power for the Earls of Shrewsbury and a sharp warning to any Welsh raiders looking for easy pickings in past centuries. Shrewsbury's town walls extend from it, further insulating the entire settlement from outside attack. That said, it doesn't have the most successful history - King Stephen's forces succeeded in storming it during the Anarchy, and Llywelyn the Great also took it in 1215. +3 Siege rolls, -3 Raid rolls, and if the outer walls were to fall the defenders can hold out in its keep for half a year (3.5 days).
Offa's Dyke: These earthenworks mark England's traditional border with Wales. Any attacker from the west would have to first get past the frontal ditch before then attempting to scale the earthen hill, while being fired upon by the defenders all the while. +1 to battle rolls when defending against incursions from the west.
Welsh March: Shrewsbury was a part of the Welsh Marches, a set of fortified lands along the Anglo-Welsh border. The 'Marcher Lords' who called these territories home accordingly built up strong castles and maintained substantial forces to defend themselves against the Welsh...or take the fight to said Welshmen themselves. The controller has access to an extra 500-man upkeep-free retinue.
Averge income, averge militia