 Just two years after purchasing the property, in 1803, the political tension that had caused Stier to flee his native country subsided, and he and his wife, Marie Louise, returned to Belgium.Riversdale was given to their daughter, Rosalie, who had married George Calvert, the grandson of Charles Calvert, 5th Baron Baltimore, in 1799.After Rosalie Stier Calvert died in 1821 and George Calvert in 1838, their son, Charles Benedict Calvert, took over the plantation.