As early as 1915 (in American press reports) and as late as the 1940s (in Nazi broadcasts), she was described as a member of the “famous Drexel family” of Philadelphia, Pennsylvania, an apparent reference to the descendants of Francis Martin Drexel (who founded the Drexel & Company banking empire), including his son Anthony Joseph Drexel (who founded Drexel University in Philadelphia) and his granddaughter Saint Katharine Drexel.
Lake Constance | Council of Constance | Drexel University | Constance Bennett | Drexel Burnham Lambert | Constance Markievicz | Drexel University College of Medicine | Constance Kamii | Constance Towers | Constance Baker Motley | Bishopric of Constance | Angela Constance | Drexel Dragons | Constance Steinkuehler | Constance of York | Constance McCashin | Constance Jablonski | Anthony Joseph Drexel | Katharine Drexel | Constance Worth | Constance Whitney Warren | Constance of Arles | Constance McLaughlin Green | Constance Kent | Constance Keene | Constance Crawley | Bernold of Constance | Peace of Constance | Joseph William Drexel | Farley Drexel "Fudge" Hatcher |
On July 26, 1943 Koischwitz, along with Fred W. Kaltenbach, Jane Anderson, Edward Delaney, Constance Drexel, Robert Henry Best, Douglas Chandler and Ezra Pound, was indicted in absentia by a District of Columbia grand jury on charges of treason.