June 13, 2019 at 3:00 pm
#12781

Keymaster
I would assume that they refer to page entries in the Will or Admon Registers maintained by each Probate Registry. These books up o 1900 are scanned on the NAI website (though finding them is a nightmare!). However, I crossed referenced a few such entries and the numbers noted in the printed will calendars don’t correspond to the Will Books. They could possibly be page numbers corresponding to the Grant Books.