Point of Divergence

The basic premise of this alternate history is that Henry VI suddenly dies when he has his first bout of mental incapacity in August 1453.

From the information I’ve gathered Henry’s illness is described as ‘a disease and disorder of such a sort overcame the King that he lost his wits and memory for a time, and nearly all his body was so uncoordinated and out of control that he could neither walk nor hold his head up, nor easily move from where he sat.’ The sources I’ve read was that Henry was seemingly unwell beginning in early August and complained of feeling unnaturally sleepy on the 15th, the next day he was incapacitated.

With this information in mind the point of divergence (POD) from OTL is the night of 15 August 1453…