Dr. John James Davis was born in Toronto on the 29th of May, 1875. His parents were Thomas George Davis and the former Mary Helen Duncan Kirk. He had an older sister named Ella and a younger sister named Mary. His father was an Excise Revenue Collector with the Post Office. According to the 1891 census, the Davis family lived in London, Ontario.
Dr. Davis graduated M.D. in 1897 from the University of Western Ontario. He joined the College of Physicians and Surgeons on the 20th of May, 1897. Dr. Davis set up his medical practice in Kent Bridge. He advertised his practice in the 1900 Farmers and Business Directory for Kent Bridge. Dr. Davis appears on the 1901 Ontario Census as practicing medicine and living in Chatham Twp (Kent County).
By 1910, Dr. Davis was living in Gananoque, Ontario. He married Orma Lena Taylor on the 20th of October, 1910 in Gananoque. Mrs. Davis was born on the 20th of February, 1876, the 4th of 6 children born to Robert Taylor and the former Polly Kilborn. Her father was a merchant. Her siblings were; George, Annie, Verner, Blanche and Hilda.
Dr. and Mrs. Davis had 2 children, while they were living in Gananoque. Helen Patricia Davis was born on the 17th of March, 1912 and their son, Thomas George Davis was born on the 19th of September, 1913. Their son became a physician and he served with the Royal Canadian Navy.
Dr. Davis died on the 24th of August, 1948. Mrs. Davis died on the 5th of February, 1977. They are buried in the Gananoque Cemetery.