His young widow, Thekla Walentinowicz, a local landowner's daughter, married Count Shuvalov, and the palace passed into the control of the Shuvalov family, with whom it remained until the German occupation in World War I when the German army established a hospital and a commandant's office there.
Hans unge enke, Tekla Walentinowicz, en lokal godsejers datter, giftede sig med Grev Shuvalov, hvorved paladset kom i Shuvalovfamiliens eje, hos hvem den forblev indtil den tyske besættelse under 1. verdenskrig, hvor den tyske hær etablerede et hospital og et befalingskontor der.