When Lorenz Fedder Feddersen was born on 21 February 1884, in Bargum, Husum, Schleswig-Holstein, Prussia, Germany, his father, Christian Peter Feddersen, was 27 and his mother, Catharina Margaretha Nissen, was 25. He married Meta Andrea Thomsen on 3 September 1908, in Karlum, Tondern, Schleswig-Holstein, Prussia, Germany. They were the parents of at least 4 sons. He died on 21 August 1963, at the age of 79.