Re: medieval war length (different anon): Weren’t wars like the Wars of the Roses and the Hundred Years’ War sort of off-again on-again affairs with a decade or two of peace between each conflict flaring up? So with Aegon and Dany getting involved in the Wot5K couldn’t some future historians label the whole 283-300 period one long ‘War of the Stag’ or whatever?

That’s true, but the lengths of the conficts within were still longer than most GRRMatical wars and the peaces were often quite briefer than a decade. 

With the Wars of the Roses, you have 1455-1458 (depending on whether you count Nevillle/Percy fighting as part of the whole, which you should), then 1459-1462, then 1464-5, then 1469-1471, then a gap until 1483, then 1485. So that’s 4 years, 4 years, 2 years, 3 years, 1 year, and 1 year respectively, so the average is much higher than in Westeros. 

With the Hundred Years War (taking just the Edwardian period because I don’t want this to go crazy) you have fighting in 1338-1340, 1341-1345 (despite a truce technically being in effect from ‘43-45), then 1346-1347, then 1355-1358, then 1359-1360. So that’s 3 years, 5 years, then 2 years, 4 years, and 2 years, again a much higher average.