Queens Regnant

[True Federalist (진정한 연방 주의자)]

Mary I, who was no bloodier than her father or her siblings. If she'd been able to conceive an heir, England would likely have resumed being a Catholic country, tho it would have likely required a different husband than her second cousin once removed, both for there to be a kid and for England to not be embroiled in anti-Castilian patriotism against foreign rule. Phillip II was for many reasons the wrong husband for Mary to have wed.

[True Federalist (진정한 연방 주의자)]

Compared to Protestants, Catholics proved likelier to seek exile rather than seek martyrdom, so absolute numbers aren't a good measure of relative bloodiness.

[True Federalist (진정한 연방 주의자)]

Empress Matilda.

Medieval History gets so overlooked relative to what came afterwards.

Or to what came before. That literally is what is means to be Medieval, to be in between two other eras people care about.