Is there a formal protocol govering a situation where Kate ‘n’ Wills have a profoundly disabled child who would be first in line for the British crown?
e.g. Severe brain damage at birth or similar.
Is there a sliding scale to this? Would a Downs child be able to take the throne, or a low-, medium-, or high-functioning autistic person?
I guess the latter is a trickier question (some of our best leaders arguably have mental ability at one end or other of the bell curve), but who makes the decision in the event that the first in line is mentally incapable of ruling effectively (if indeed there is such a status).
Churchill had deep depression, and George III was famously out of his gourd, but we are perhaps more likely to assess “ecentricity” as mental illness these days.