Herman Knupke was born in Germany in 1881. In the 1900 U.S. Census for Erie County, Ohio, Herman was residing in Sandusky with Gustave and Johana Knupke, ages 60 and 58, and 17 year old Lizzie. The family's surname was spelled Kemupka in the census listing. Herman stated in the census report that he arrived in the United States in 1883.
On May 30, 1905, Herman Knupke married Mary Hager in Erie County. An abstract of their marriage record is available at Family Search Labs in the Ohio Marriages Collection. Herman listed his parents names as Gust Knupke and Johanna Eichman, and Mary's parents were listed as Joseph Hager and Lena Brower. Herman's birthplace was Berlin, Prussia, and Mary's birthplace was Germany.
Herman Knupke, whose occupation was carpenter, passed away on June 12, 1923 at his Taylor Street residence in Sandusky. Oakland Cemetery interment cards list the cause of death for Herman Knupke as tuberculosis. Herman Knupke was survived by his widow, two sons, and five daughters. His tombstone, which lies flat against the ground, is located in Block F of Sandusky's Oakland Cemetery.