When Erwin Albert Sincler was born on 13 April 1905, in Lake City, Missaukee, Michigan, United States, his father, Silas Wright Sinkler, was 40 and his mother, Minnie Jane Rounds, was 37. He married Ruth Mae Kidder on 11 May 1922, in Angola, Pleasant Township, Steuben, Indiana, United States. He lived in Kalamazoo, Kalamazoo, Michigan, United States in 1920. He died on 4 September 1970, in Battle Creek, Calhoun, Michigan, United States, at the age of 65, and was buried in Augusta, Kalamazoo, Michigan, United States.