When Johann Fresenborg was born in August 1906, in Hanover, Prussia, Germany, his father, Johann, Heinrich Fresenborg, was 40 and his mother, Helena Lenger, was 28. He married Johanna Friederike Kramer in 1934, in Bremerhaven, Bremen, Germany. They were the parents of at least 4 sons and 2 daughters. He died on 23 June 1975, at the age of 68.