The Freudenberganlage is named after Adolf Emil Freudenberg (1894–1977), who donated the park to the Heilsberg residents in 1967.
Freudenberg left the civil service as a diplomat in 1934 because of his wife Elsa's Jewish ancestry. He then began studying theology, but was arrested and banned from studying in Germany. He therefore finally finished his studies in Bethel and emigrated in 1939, first to London and then to Geneva. There he was commissioned by the World Council of Churches to look after emigrants from Germany and was to set up the Council's refugee aid organization. He also campaigned in communities and schools in Switzerland for the rescue of refugees and the opening of borders, as well as for donations.
Even after his return to Germany in 1947, he rejected all requests to return to diplomatic service. Instead, he continued his mission of caring for refugees and displaced persons as a pastor in the Holy Spirit Church.
The fate of the Heilsberg settlers is commemorated today by a work of art consisting of six steles, which was created by the artist Christof Paul in 2008. Adolf Emil Freudenberg became an honorary citizen of Bad Vilbel in 1964.