Ed Koch | Robert Koch | Heckler & Koch MP5 | Howard W. Koch | Robert Koch Institute | Koch Entertainment | Koch | Howard Koch | Beate Koch | Roland Koch | William A. Koch | Koch Rajbongshi people | Kenneth Koch | Jacobus Henricus van 't Hoff | Jacobus Arminius | Christopher Koch | William Koch | Tom Koch | Tim Jacobus | Marita Koch | Ludwig Karl Koch | Ludwig Carl Christian Koch | Koch Bihar | Jacobus Hendrik Pierneef | Jacobus de Teramo | Heckler & Koch MP7 | Heckler & Koch G36 | Heckler & Koch G3 | Heckler & Koch | Georg Koch |
According to Hackenschmidt, his sparring partners were Jacobus Koch, Wladek Zbyscko and Dr. Roller.