Donald W. Johnson graduated from Toronto’s Osgoode Hall Law School in 1966. He was called to the Bar in 1968. He was then employed as Assistant Crown Attorney. In 1970, Mr. Johnson moved to Sault Ste. Marie to continue working as Assistant Crown Attorney. He would later be transferred to Cornwall in 1972, where he became Crown Attorney for the United Counties of Stormont, Dundas, and Glengarry.
While a Crown Prosecutor, Mr. Johnson prosecuted at all levels from Traffic Court to the Supreme Court of Ontario. By 1981, he left the Crown Office to practice criminal law as sole practitioner in Cornwall. Today, he continues to offer criminal law services with his dedicated staff.