 Their union ended in 1906 and he married the writer Thea Löwenstein (née Bauer) in 1907, with whom he had two children.Their daughter Dorothea ("Mopsa") was a resistance fighter during the Second World War and was detained by the Nazi's in Ravensbrück concentration camp.The wealth brought by Thea from her rich manufacturing family enabled the couple to build the Schloss Bellemaison in Munich.