William Jerrems Silver Token from Gainsborough 🌍

My mills on currency page has long had a listing of the "1811 shilling issued by William Jerrems in Gainsborough, Lincolnshire carrying an image of a ship and a windmill", but I had no other information on this token. Thanks to Ian Rousell, who has an example of this coin passed to him by his father, I now have a illustration of the token. Ian believes his ancesters may have been associated with this or another mill - can anyone provide any more information on William Jerrems or his mill?