Dr. William Henry Millen was born on the 4th of August, 1865 in Ancaster, Ontario. His parents were Thomas Millen and the former Mary H. Slater. His father was born in England and his mother was born in Ontario. He was the eldest of 3 children. He had a brother named Thomas and a sister named Elizabeth.
When he was still a little boy, Dr. Millen’s parents moved to Essex County. He received his primary education there and after graduating from High School, he attended the Detroit College of Medicine, graduating in 1891. Dr. Millen then attended the Trinity College of Medicine in Toronto. He graduated M.D. in 1894. Dr. Millen interned at Harper Hospital in Detroit. He worked in Mansfield Ohio for a time then moved to Wheatley, Ontario.
Dr. Millen married Katherine Jessie McKellar on the 17th of May, 1894, in North Oxford Township. She was the daughter of Archie McKellar and the former Mary Jane Avery. Her parents farmed in Oxford County, near Ingersoll. Her siblings were; Nancy, Eliza, Mary, Helen and John.
Dr. and Mrs. Millen had 2 daughters. Nina Lenore was born September 29th, 1895 and Mary Kathleen was born May 26th, 1899. Dr. Millen practiced medicine in Wheatley for about 5 years, then in 1900 he took over the practice of Dr. Rourke in Woodslee, Ontario (Essex County).
Dr. Millen moved his family to Hillsdown, Alberta in 1906 where he continued to practice medicine.
Dr. Millen died in a railway accident in Azilda, Ontario (near Sudbury) on the 12th of September, 1906. The brakes failed on a Canadian Pacific Railway train and it collided with a harvester train. He was one of 12 people killed. He was buried at the Cottam Cemetery in Cottam (Essex County).
Note: The year of his death on his tombstone appears as 1909. His year of death has been confirmed with numerous sources and the train crash is well documented.
His wife, Katherine moved to Toronto after his death. She died on the 5th of April, 1929. At the time of her death, she resided on Harvard Ave., in Toronto. She was buried at the Cottam Cemetery, next to her husband.