When Bertha E Genzke was born on 25 March 1865, in Hartland, Shawano, Wisconsin, United States, her father, August Friedrich Ferdinand Genzke, was 30 and her mother, Johanna Charlotte Wilhelmine Minnie Heller, was 28. She married William Benjamin Casterson about 1884. They were the parents of at least 2 sons and 4 daughters. She died on 23 March 1903, in Outagamie, Wisconsin, United States, at the age of 37, and was buried in Seymour Cemetery, Seymour, Outagamie, Wisconsin, United States.