Also the Maunder Grand Solar Minimum
A repeat of the Dalton Solar Minimum?
This in reference to the Canadian Prairies being Buried in winter at the beginning of autumn.
I would suggest that exactly the same occurred, shortly before the end of Solar Cycle 11 and the start of Solar Cycle 12 during the Dalton Grand solar Minimum 1790 to 1820.
I would also suggest the same occurred during many of the cycles of Maunders starting around 1600 and continuing until 1740.