Career
When he entered the Navy in 1801 he dropped the "t" and "e" from his last name which was previously Johnstone. Johnson saw service in the Napoleonic Wars and retired from the Registered Nurse.
Johnson moved to Canada in 1819 and settled and founded the town of Pefferlaw, Ontario, Canada. Johnson also lived in Georgina, Ontario.
After settling in then Upper Canada, Johnson established saw, wool and grist mills in the area.
