>>15831468It's Northern Ireland and Malta.
And yeah pretty much, though it's more inspired by, rather than based on... medieval England is just the starting point, and it's medieval England at the time of the Wars of the Roses... so:
House of York = House of Stark
House of Lancaster = House of Lannister
Vale of Arryn = Wales, but switched to the east side
King's Landing = London
300 years ago, Aegon the Conqueror arrived and established the Targaryen line of Dragon Kings = 300 years before the Wars of the Roses, William the Conqueror invaded and conquered England in the Norman Conquest