Mitchell Bigtree was born on 16 June 1876, in Franklin, Franklin, New York, United States as the son of Philip Bigtree. He married Margaret Ellen Doyle on 6 April 1896, in Hulme, Greater Manchester, England, United Kingdom. They were the parents of at least 4 sons and 5 daughters. He lived in Bombay, Franklin, New York, United States in 1920 and Syracuse, Onondaga, New York, United States for about 10 years. He died in 1944, at the age of 68, and was buried in Hogansburg, Bombay, Franklin, New York, United States.
Transferred use of the surname, itself derived from a common medieval form of Michael , representing an Anglicized pronunciation of the French name Michel, introduced to Britain by the Normans.