When Roy Morris Tomlinson was born in August 1899, in Buchanan, Berrien, Michigan, United States, his father, William Henry Tomlinson, was 24 and his mother, Edith May Spaulding, was 20. He married Mildred Pinckert on 25 September 1920, in St. Joseph, Indiana, United States. They were the parents of at least 2 sons. He lived in Buchanan Township, Berrien, Michigan, United States in 1900 and Michigan Township, LaPorte, Indiana, United States in 1940. He died on 3 February 1963, in South Bend, St. Joseph, Indiana, United States, at the age of 63, and was buried in Southlawn Cemetery, Centre Township, St. Joseph, Indiana, United States.