In line with the diminished status of the British on the Upper Great Lakes after the Treaty of Greenville and
Jay's Treaty, young Askin retired to the Canadian side of what was becoming an international boundary. He accepted the King's appointment as collector of customs at
Amherstburg, Upper Canada, in 1801, and accepted further appointment as storekeeper for the Indian Department at
Fort St. Joseph on
St. Joseph Island in 1807. In the latter post, he took the substantial career risk of issuing more than forty heavyweight
Hudson's Bay point blankets in November 1811 to the fort's impecunious commander, Captain
Charles Roberts, accepting a
scrip warrant in payment. John's wife, Madelaine, and the other women of the fort sewed the blankets into the first
Mackinaw jackets, which
British Army soldiers used as
greatcoats for winter fatigue duty. ==War of 1812==