More slowly and less dramatically, but perhaps more effectively, the new teachings travelled as trade expanded and princes sought wives in other, often Christian lands.

ECONOMIST: The rise of Christianity

Not merely Richard III, but also his killer and successor Henry VII needed the princes out of the way.

WSJ: Andrew Roberts: Shakespeare Has a (Parking) Lot to Answer For

The health of Saudi kings and princes in line for the throne matters not only for the Saudis, but for the whole world.

BBC: Saudi royal health scare: Why it matters