Dr. Leonard James Williams was born in Toronto, Ontario on the 15th of February, 1910. Dr. Williams was the 2nd of 3 children born to Arthur James Williams and the former Mabel Clarkson. His father was a restaurant manager and his siblings were Elbert Clarkson Williams (who died at the age of 2 years and 7 months) and Earl Clarkson Williams. In 1911 the Williams family lived at 37 Simpson Avenue in Toronto and according to the 1921 census, they resided at 98 Follis Avenue in Toronto.
Dr. Williams graduated from The University of Toronto Faculty of Medicine in 1935. While at university Dr. Williams enjoyed playing water polo and he was the musical director of the Medical Society. In his fifth year he was the Class President.
Between 1938 and 1940, Dr. Williams practiced medicine in Wallaceburg, Ontario. His name appears as the attending physician on numerous birth and death records.
Dr. Williams married Anna Mary Swoboda on the 23rd of February, 1939 in Toronto. Mrs. Williams was born in Alberta in July of 1906. She was the eldest of 5 children born to Frank Swoboda and the former Anna Mary Schuller. Her father was a harness maker and her siblings were; Christianna Swoboda, Madeline Swoboda (who died in childhood), Ralph Swoboda and Joseph Swoboda. Mrs. Williams was a registered nurse and she was raised in Daysland, Alberta.
At the time of his marriage, Dr. Williams was residing at 325 Nelson Street in Wallaceburg.
Dr. and Mrs. Williams had a son named Eric Williams and a daughter named Mary Ann Williams.
Dr. Williams died on the 8th of May, 1977 in Vancouver, British Columbia. Dr. Williams had retired prior to his death.