 His son, the Polar explorer Lincoln Ellsworth, inherited the castle in 1925 but lived there only intermittently.After Lincoln Ellsworth's death in 1951, ownership of the castle passed to his widow Marie Louise Ellsworth-Ulmer.In 1956 she sold the castle together with its contents for 500,000 francs to a foundation set up by the town of Lenzburg and the Canton of Aargau.